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Finding the Fourth Proportional to 579,217.20, 868,825.80 and 478,833.90

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Solution

The fourth proportional to 579,217.20, 868,825.80 and 478,833.90 is: 718,250.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,217.20 : 868,825.80 = 478,833.90 : x
  2. Step 2: Convert to fraction form
    579,217.20/868,825.80 = 478,833.90/x
  3. Step 3: Cross multiply
    579,217.20x = 868,825.80 × 478,833.90
  4. Step 4: Simplify right side
    579,217.20x = 416,023,246,234.62
  5. Step 5: Solve for x
    x = 416,023,246,234.62/579,217.20
  6. Step 6: Final answer
    x = 718,250.85

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Double scale
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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.