Solving for X (assuming if Statement

montanaaggie

Board Regular
Joined
Nov 11, 2005
Messages
124
Office Version
  1. 365
Platform
  1. Windows
A1=.2
A2=.3
A3=.5
A4=sum(A1:A3)=1.0

I'd like to make a calculation to put in A1 (at least I think its this cell), that would allow me to change A2, leave A3 constant at .5, and A4 sum would always be equal to 1.0. For example in the next scenario. A2=.4, A3=.5, and A4, the sum would still equal 1. What equation would be needed for A1 to equal .1?

Thanks,
 

Excel Facts

What did Pito Salas invent?
Pito Salas, working for Lotus, popularized what would become to be pivot tables. It was released as Lotus Improv in 1989.

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