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Finding the Fourth Proportional to 658,951.18, 987,298.41 and 359,641.78

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Solution

The fourth proportional to 658,951.18, 987,298.41 and 359,641.78 is: 538,846.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,951.18 : 987,298.41 = 359,641.78 : x
  2. Step 2: Convert to fraction form
    658,951.18/987,298.41 = 359,641.78/x
  3. Step 3: Cross multiply
    658,951.18x = 987,298.41 × 359,641.78
  4. Step 4: Simplify right side
    658,951.18x = 355,073,757,563.57
  5. Step 5: Solve for x
    x = 355,073,757,563.57/658,951.18
  6. Step 6: Final answer
    x = 538,846.83

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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.