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Finding the Fourth Proportional to 625,893.18, 863,780.22 and 353,966.46

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Solution

The fourth proportional to 625,893.18, 863,780.22 and 353,966.46 is: 488,500.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,893.18 : 863,780.22 = 353,966.46 : x
  2. Step 2: Convert to fraction form
    625,893.18/863,780.22 = 353,966.46/x
  3. Step 3: Cross multiply
    625,893.18x = 863,780.22 × 353,966.46
  4. Step 4: Simplify right side
    625,893.18x = 305,749,226,691.42
  5. Step 5: Solve for x
    x = 305,749,226,691.42/625,893.18
  6. Step 6: Final answer
    x = 488,500.65

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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.