Finding the Fourth Proportional to 861,613.68, 1,292,419.80 and 387,745.44
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Solution
The fourth proportional to 861,613.68, 1,292,419.80 and 387,745.44 is: 581,617.84
Step by Step Solution
- Step 1: Write the proportion equation
861,613.68 : 1,292,419.80 = 387,745.44 : x - Step 2: Convert to fraction form
861,613.68/1,292,419.80 = 387,745.44/x - Step 3: Cross multiply
861,613.68x = 1,292,419.80 × 387,745.44 - Step 4: Simplify right side
861,613.68x = 501,129,884,015.71 - Step 5: Solve for x
x = 501,129,884,015.71/861,613.68 - Step 6: Final answer
x = 581,617.84
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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.