Home / 724,712.76-1,000,195.89-438,234.90

Finding the Fourth Proportional to 724,712.76, 1,000,195.89 and 438,234.90

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Solution

The fourth proportional to 724,712.76, 1,000,195.89 and 438,234.90 is: 604,819.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,712.76 : 1,000,195.89 = 438,234.90 : x
  2. Step 2: Convert to fraction form
    724,712.76/1,000,195.89 = 438,234.90/x
  3. Step 3: Cross multiply
    724,712.76x = 1,000,195.89 × 438,234.90
  4. Step 4: Simplify right side
    724,712.76x = 438,320,745,834.56
  5. Step 5: Solve for x
    x = 438,320,745,834.56/724,712.76
  6. Step 6: Final answer
    x = 604,819.96

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.