Finding the Fourth Proportional to 861,554.36, 1,292,331.90 and 387,686.18
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Solution
The fourth proportional to 861,554.36, 1,292,331.90 and 387,686.18 is: 581,529.43
Step by Step Solution
- Step 1: Write the proportion equation
861,554.36 : 1,292,331.90 = 387,686.18 : x - Step 2: Convert to fraction form
861,554.36/1,292,331.90 = 387,686.18/x - Step 3: Cross multiply
861,554.36x = 1,292,331.90 × 387,686.18 - Step 4: Simplify right side
861,554.36x = 501,019,217,603.14 - Step 5: Solve for x
x = 501,019,217,603.14/861,554.36 - Step 6: Final answer
x = 581,529.43
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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.