Finding the Fourth Proportional to 686,272.10, 1,029,537.68 and 259,935.62
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Solution
The fourth proportional to 686,272.10, 1,029,537.68 and 259,935.62 is: 389,952.48
Step by Step Solution
- Step 1: Write the proportion equation
686,272.10 : 1,029,537.68 = 259,935.62 : x - Step 2: Convert to fraction form
686,272.10/1,029,537.68 = 259,935.62/x - Step 3: Cross multiply
686,272.10x = 1,029,537.68 × 259,935.62 - Step 4: Simplify right side
686,272.10x = 267,613,508,716.80 - Step 5: Solve for x
x = 267,613,508,716.80/686,272.10 - Step 6: Final answer
x = 389,952.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.