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Finding the Fourth Proportional to 521,874.30, 782,811.45 and 272,523.90

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Solution

The fourth proportional to 521,874.30, 782,811.45 and 272,523.90 is: 408,785.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,874.30 : 782,811.45 = 272,523.90 : x
  2. Step 2: Convert to fraction form
    521,874.30/782,811.45 = 272,523.90/x
  3. Step 3: Cross multiply
    521,874.30x = 782,811.45 × 272,523.90
  4. Step 4: Simplify right side
    521,874.30x = 213,334,829,318.66
  5. Step 5: Solve for x
    x = 213,334,829,318.66/521,874.30
  6. Step 6: Final answer
    x = 408,785.85

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Similar ratio
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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.