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Finding the Fourth Proportional to 629,857,433.40, 944,786,150.10 and 220,954,918.20

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Solution

The fourth proportional to 629,857,433.40, 944,786,150.10 and 220,954,918.20 is: 331,432,377.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,433.40 : 944,786,150.10 = 220,954,918.20 : x
  2. Step 2: Convert to fraction form
    629,857,433.40/944,786,150.10 = 220,954,918.20/x
  3. Step 3: Cross multiply
    629,857,433.40x = 944,786,150.10 × 220,954,918.20
  4. Step 4: Simplify right side
    629,857,433.40x = 208,755,146,511,838,400
  5. Step 5: Solve for x
    x = 208,755,146,511,838,400/629,857,433.40
  6. Step 6: Final answer
    x = 331,432,377.30

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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.