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Finding the Fourth Proportional to 616,279.80, 924,419.70 and 413,326.20

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Solution

The fourth proportional to 616,279.80, 924,419.70 and 413,326.20 is: 619,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,279.80 : 924,419.70 = 413,326.20 : x
  2. Step 2: Convert to fraction form
    616,279.80/924,419.70 = 413,326.20/x
  3. Step 3: Cross multiply
    616,279.80x = 924,419.70 × 413,326.20
  4. Step 4: Simplify right side
    616,279.80x = 382,086,881,806.14
  5. Step 5: Solve for x
    x = 382,086,881,806.14/616,279.80
  6. Step 6: Final answer
    x = 619,989.30

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Similar ratio
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1.5x scale

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.