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Finding the Fourth Proportional to 521,753.70, 782,630.55 and 521,753.70

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Solution

The fourth proportional to 521,753.70, 782,630.55 and 521,753.70 is: 782,630.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,753.70 : 782,630.55 = 521,753.70 : x
  2. Step 2: Convert to fraction form
    521,753.70/782,630.55 = 521,753.70/x
  3. Step 3: Cross multiply
    521,753.70x = 782,630.55 × 521,753.70
  4. Step 4: Simplify right side
    521,753.70x = 408,340,385,195.54
  5. Step 5: Solve for x
    x = 408,340,385,195.54/521,753.70
  6. Step 6: Final answer
    x = 782,630.55

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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.