Conditional Formatting question

[Ricki]

I have a sheet with several columns. I need to highlight a cell that is the top based on another cell.
example:
column A column B column C
1 2 3
2 4 2
1 1 2
1 4 6

Based on the above values, the value 4 needs to be highlighted if the value in col A is = 1.

How should I go about it to get the desired result?

 

[Vogateer]

Conditional format range: B1:B4 (change accordingly)

Conditional formatting formula:

=AND(B1=MAXIFS(B1:B4,A1:A4,1), A1=1)

Change the ranges accordingly for the above formula.