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Finding the Fourth Proportional to 659,587.20, 988,054 and 499,936.20

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Solution

The fourth proportional to 659,587.20, 988,054 and 499,936.20 is: 748,898.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,587.20 : 988,054 = 499,936.20 : x
  2. Step 2: Convert to fraction form
    659,587.20/988,054 = 499,936.20/x
  3. Step 3: Cross multiply
    659,587.20x = 988,054 × 499,936.20
  4. Step 4: Simplify right side
    659,587.20x = 493,963,962,154.80
  5. Step 5: Solve for x
    x = 493,963,962,154.80/659,587.20
  6. Step 6: Final answer
    x = 748,898.65

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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.