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Finding the Fourth Proportional to 479,112.30, 717,793.65 and 389,882.70

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Solution

The fourth proportional to 479,112.30, 717,793.65 and 389,882.70 is: 584,112.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,112.30 : 717,793.65 = 389,882.70 : x
  2. Step 2: Convert to fraction form
    479,112.30/717,793.65 = 389,882.70/x
  3. Step 3: Cross multiply
    479,112.30x = 717,793.65 × 389,882.70
  4. Step 4: Simplify right side
    479,112.30x = 279,855,326,304.86
  5. Step 5: Solve for x
    x = 279,855,326,304.86/479,112.30
  6. Step 6: Final answer
    x = 584,112.17

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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.