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Finding the Fourth Proportional to 447,310.62, 670,829.85 and 127,488.60

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Solution

The fourth proportional to 447,310.62, 670,829.85 and 127,488.60 is: 191,194.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,310.62 : 670,829.85 = 127,488.60 : x
  2. Step 2: Convert to fraction form
    447,310.62/670,829.85 = 127,488.60/x
  3. Step 3: Cross multiply
    447,310.62x = 670,829.85 × 127,488.60
  4. Step 4: Simplify right side
    447,310.62x = 85,523,158,414.71
  5. Step 5: Solve for x
    x = 85,523,158,414.71/447,310.62
  6. Step 6: Final answer
    x = 191,194.12

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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.