Finding the Fourth Proportional to 861,549.86, 1,292,325.15 and 387,681.68
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Solution
The fourth proportional to 861,549.86, 1,292,325.15 and 387,681.68 is: 581,522.68
Step by Step Solution
- Step 1: Write the proportion equation
861,549.86 : 1,292,325.15 = 387,681.68 : x - Step 2: Convert to fraction form
861,549.86/1,292,325.15 = 387,681.68/x - Step 3: Cross multiply
861,549.86x = 1,292,325.15 × 387,681.68 - Step 4: Simplify right side
861,549.86x = 501,010,785,258.25 - Step 5: Solve for x
x = 501,010,785,258.25/861,549.86 - Step 6: Final answer
x = 581,522.68
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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.