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Finding the Fourth Proportional to 659,591.20, 988,060 and 499,940.20

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Solution

The fourth proportional to 659,591.20, 988,060 and 499,940.20 is: 748,904.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,591.20 : 988,060 = 499,940.20 : x
  2. Step 2: Convert to fraction form
    659,591.20/988,060 = 499,940.20/x
  3. Step 3: Cross multiply
    659,591.20x = 988,060 × 499,940.20
  4. Step 4: Simplify right side
    659,591.20x = 493,970,914,012
  5. Step 5: Solve for x
    x = 493,970,914,012/659,591.20
  6. Step 6: Final answer
    x = 748,904.65

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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.