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Finding the Fourth Proportional to 546,781.20, 820,171.80 and 487,732.20

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Solution

The fourth proportional to 546,781.20, 820,171.80 and 487,732.20 is: 731,598.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,781.20 : 820,171.80 = 487,732.20 : x
  2. Step 2: Convert to fraction form
    546,781.20/820,171.80 = 487,732.20/x
  3. Step 3: Cross multiply
    546,781.20x = 820,171.80 × 487,732.20
  4. Step 4: Simplify right side
    546,781.20x = 400,024,196,391.96
  5. Step 5: Solve for x
    x = 400,024,196,391.96/546,781.20
  6. Step 6: Final answer
    x = 731,598.30

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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.