The only thing that springs to mind is something we've done for margin calulations and work in progress values. I've simplified it a bit here.
We have a Job Number column for identifying the specific job and then we have a Total Price column and Total Cost column summing up the relevant price and cost fields. We then use the column headings to get Total Price/(Total Price-Total Cost).
I'm guessing that you're doing something more complicated but just thought I'd mention it in case it gives you another way of thinking about the problem. Could you create a Calculated Column 1 and then use this column in the formulas for the other columns? You could always hide the columns that you don't want to show.