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Finding the Fourth Proportional to 508,981.20, 764,346.60 and 493,234.80

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Solution

The fourth proportional to 508,981.20, 764,346.60 and 493,234.80 is: 740,699.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,981.20 : 764,346.60 = 493,234.80 : x
  2. Step 2: Convert to fraction form
    508,981.20/764,346.60 = 493,234.80/x
  3. Step 3: Cross multiply
    508,981.20x = 764,346.60 × 493,234.80
  4. Step 4: Simplify right side
    508,981.20x = 377,002,342,381.68
  5. Step 5: Solve for x
    x = 377,002,342,381.68/508,981.20
  6. Step 6: Final answer
    x = 740,699.94

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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.