Autofilling a formula down

[CLR]

Hi All.......
I have three columns, column A is about 3500 rows, (exact quantity unknown),
columns B and C have the same quantity of rows each but are a few hundred
less than column A, again (exact quantity unkown) I would like to find the
lower points of cols B and C and insert a separate fomula into each column
and autofill both formulas down as far as there is data in column A, then
Copy > PasteSpecial > Values to get rid of the formulas.....thus giving me 3
columns of data of all the same length.

Any help would be appreciated.

Vaya con Dios,
Chuck, CABGx3

 

[CLR]

Hey Mike.........thanks much for the comeback.
Your code works super fine with a simple formula like you show, but when I
try to modify it to use my compound real formula I get no joy.........

Here's my formula, which worked ok when macroed into cell R2 and copied
down.........
..Value =
"=IF(ISERR(LOOKUP((SUMPRODUCT(($A$12:$A$10000=$A2)*($q$12:$q$10000>=DATA!$K$
4)*J2:j10000))/(SUMPRODUCT(($A$12:$A$10000=$A2)*($q$12:$q$10000>=DATA!$K$4))
),{0,61,71,81,91,101},{""F"",""D"",""C"",""B"",""A"",""A+""})),""NoData"",LO
OKUP((SUMPRODUCT(($A$12:$A$10000=$A2)*($q$12:$q$10000>=DATA!$K$4)*$J$12:$j$1
0000))/(SUMPRODUcT(($A$12:A$10000=$A2)*($q$12:$q$10000>=DATA!$K$4))),{0,61,7
1,81,91,101},{""F"",""D"",""C"",""B"",""A"",""A+""}))"

it fails in that context, to the error "NoData"...... the$A2 reference is
wrong for that row, ........

so I tried to modify it by replacing the $A2 with c.offset(, -17) because I
am putting the formula actually in column R......and still want to refer to
the value in column A of that row........this failed also to the error
"NoData".........and in both cases, the macro actually put the formula in
the cells rather than the values of their calculations.

Obviously this is over my head.....please help

Vaya con Dios,
Chuck, CABGx3

 

[CLR]

HI Mike.......
Well, many thanks for your suggestions.......combining both of yours, and
tweaking a little for my application, the thing works
beautifully.......You've taught me much neat stuff.........
Here's the working version:

Sub InsertRanks()
Dim LRowA As Long, LRowR As Long
Dim rng As Range, c As Range
LRowA = Cells(Rows.Count, "A").End(xlUp).Row
LRowR = Cells(Rows.Count, "R").End(xlUp).Row
Set rng = Range("R" & LRowR + 1 & ":R" & LRowA)
For Each c In rng
Range("R1").Copy
c.Select
ActiveSheet.Paste
c.Value = c.Value
Range("s1").Copy
c.Offset(, 1).Select
ActiveSheet.Paste
c.Offset(, 1).Value = c.Offset(, 1).Value
Next
End Sub

Of course R1 and S1 contain the big formulas.........
Again, thank you most kindly for helping me through this.......

Vaya conDios,
Chuck, CABGx3