Finding the Fourth Proportional to 861,547.86, 1,292,322.15 and 387,679.68
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Solution
The fourth proportional to 861,547.86, 1,292,322.15 and 387,679.68 is: 581,519.68
Step by Step Solution
- Step 1: Write the proportion equation
861,547.86 : 1,292,322.15 = 387,679.68 : x - Step 2: Convert to fraction form
861,547.86/1,292,322.15 = 387,679.68/x - Step 3: Cross multiply
861,547.86x = 1,292,322.15 × 387,679.68 - Step 4: Simplify right side
861,547.86x = 501,007,037,568.91 - Step 5: Solve for x
x = 501,007,037,568.91/861,547.86 - Step 6: Final answer
x = 581,519.68
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.