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Finding the Fourth Proportional to 487,065.98, 729,800.28 and 344,213.55

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Solution

The fourth proportional to 487,065.98, 729,800.28 and 344,213.55 is: 515,755.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,065.98 : 729,800.28 = 344,213.55 : x
  2. Step 2: Convert to fraction form
    487,065.98/729,800.28 = 344,213.55/x
  3. Step 3: Cross multiply
    487,065.98x = 729,800.28 × 344,213.55
  4. Step 4: Simplify right side
    487,065.98x = 251,207,145,169.79
  5. Step 5: Solve for x
    x = 251,207,145,169.79/487,065.98
  6. Step 6: Final answer
    x = 515,755.88

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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.