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Finding the Fourth Proportional to 625,956.57, 864,154.98 and 489,700.98

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Solution

The fourth proportional to 625,956.57, 864,154.98 and 489,700.98 is: 676,049.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,956.57 : 864,154.98 = 489,700.98 : x
  2. Step 2: Convert to fraction form
    625,956.57/864,154.98 = 489,700.98/x
  3. Step 3: Cross multiply
    625,956.57x = 864,154.98 × 489,700.98
  4. Step 4: Simplify right side
    625,956.57x = 423,177,540,577.88
  5. Step 5: Solve for x
    x = 423,177,540,577.88/625,956.57
  6. Step 6: Final answer
    x = 676,049.36

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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.