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Finding the Fourth Proportional to 625,780.02, 863,571.24 and 353,901.30

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Solution

The fourth proportional to 625,780.02, 863,571.24 and 353,901.30 is: 488,380.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,780.02 : 863,571.24 = 353,901.30 : x
  2. Step 2: Convert to fraction form
    625,780.02/863,571.24 = 353,901.30/x
  3. Step 3: Cross multiply
    625,780.02x = 863,571.24 × 353,901.30
  4. Step 4: Simplify right side
    625,780.02x = 305,618,984,478.61
  5. Step 5: Solve for x
    x = 305,618,984,478.61/625,780.02
  6. Step 6: Final answer
    x = 488,380.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.