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Finding the Fourth Proportional to 658,979.60, 987,340.68 and 359,670

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Solution

The fourth proportional to 658,979.60, 987,340.68 and 359,670 is: 538,888.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,979.60 : 987,340.68 = 359,670 : x
  2. Step 2: Convert to fraction form
    658,979.60/987,340.68 = 359,670/x
  3. Step 3: Cross multiply
    658,979.60x = 987,340.68 × 359,670
  4. Step 4: Simplify right side
    658,979.60x = 355,116,822,375.60
  5. Step 5: Solve for x
    x = 355,116,822,375.60/658,979.60
  6. Step 6: Final answer
    x = 538,888.95

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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.