Finding the Fourth Proportional to 721,238.79, 995,297.25 and 398,948.63
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Solution
The fourth proportional to 721,238.79, 995,297.25 and 398,948.63 is: 550,542.31
Step by Step Solution
- Step 1: Write the proportion equation
721,238.79 : 995,297.25 = 398,948.63 : x - Step 2: Convert to fraction form
721,238.79/995,297.25 = 398,948.63/x - Step 3: Cross multiply
721,238.79x = 995,297.25 × 398,948.63 - Step 4: Simplify right side
721,238.79x = 397,072,467,359.04 - Step 5: Solve for x
x = 397,072,467,359.04/721,238.79 - Step 6: Final answer
x = 550,542.31
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.