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Finding the Fourth Proportional to 658,182.71, 987,078.45 and 279,097.85

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Solution

The fourth proportional to 658,182.71, 987,078.45 and 279,097.85 is: 418,563.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,182.71 : 987,078.45 = 279,097.85 : x
  2. Step 2: Convert to fraction form
    658,182.71/987,078.45 = 279,097.85/x
  3. Step 3: Cross multiply
    658,182.71x = 987,078.45 × 279,097.85
  4. Step 4: Simplify right side
    658,182.71x = 275,491,473,176.33
  5. Step 5: Solve for x
    x = 275,491,473,176.33/658,182.71
  6. Step 6: Final answer
    x = 418,563.83

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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.