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Finding the Fourth Proportional to 658,441.92, 987,466.80 and 279,358.08

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Solution

The fourth proportional to 658,441.92, 987,466.80 and 279,358.08 is: 418,953.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,441.92 : 987,466.80 = 279,358.08 : x
  2. Step 2: Convert to fraction form
    658,441.92/987,466.80 = 279,358.08/x
  3. Step 3: Cross multiply
    658,441.92x = 987,466.80 × 279,358.08
  4. Step 4: Simplify right side
    658,441.92x = 275,856,829,311.74
  5. Step 5: Solve for x
    x = 275,856,829,311.74/658,441.92
  6. Step 6: Final answer
    x = 418,953.93

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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.