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Finding the Fourth Proportional to 659,859.24, 989,591.28 and 344,143.92

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Solution

The fourth proportional to 659,859.24, 989,591.28 and 344,143.92 is: 516,112.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,859.24 : 989,591.28 = 344,143.92 : x
  2. Step 2: Convert to fraction form
    659,859.24/989,591.28 = 344,143.92/x
  3. Step 3: Cross multiply
    659,859.24x = 989,591.28 × 344,143.92
  4. Step 4: Simplify right side
    659,859.24x = 340,561,822,297.02
  5. Step 5: Solve for x
    x = 340,561,822,297.02/659,859.24
  6. Step 6: Final answer
    x = 516,112.83

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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.