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Finding the Fourth Proportional to 987,376, 1,481,068.86 and 239,422

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Solution

The fourth proportional to 987,376, 1,481,068.86 and 239,422 is: 359,134.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,376 : 1,481,068.86 = 239,422 : x
  2. Step 2: Convert to fraction form
    987,376/1,481,068.86 = 239,422/x
  3. Step 3: Cross multiply
    987,376x = 1,481,068.86 × 239,422
  4. Step 4: Simplify right side
    987,376x = 354,600,468,598.92
  5. Step 5: Solve for x
    x = 354,600,468,598.92/987,376
  6. Step 6: Final answer
    x = 359,134.18

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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.