Finding the Fourth Proportional to 687,489.98, 1,031,219.13 and 404,972.74
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Solution
The fourth proportional to 687,489.98, 1,031,219.13 and 404,972.74 is: 607,449.78
Step by Step Solution
- Step 1: Write the proportion equation
687,489.98 : 1,031,219.13 = 404,972.74 : x - Step 2: Convert to fraction form
687,489.98/1,031,219.13 = 404,972.74/x - Step 3: Cross multiply
687,489.98x = 1,031,219.13 × 404,972.74 - Step 4: Simplify right side
687,489.98x = 417,615,636,616.52 - Step 5: Solve for x
x = 417,615,636,616.52/687,489.98 - Step 6: Final answer
x = 607,449.78
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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.