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Finding the Fourth Proportional to 629,861,208.60, 944,791,812.90 and 220,769,736.60

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Solution

The fourth proportional to 629,861,208.60, 944,791,812.90 and 220,769,736.60 is: 331,154,604.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,861,208.60 : 944,791,812.90 = 220,769,736.60 : x
  2. Step 2: Convert to fraction form
    629,861,208.60/944,791,812.90 = 220,769,736.60/x
  3. Step 3: Cross multiply
    629,861,208.60x = 944,791,812.90 × 220,769,736.60
  4. Step 4: Simplify right side
    629,861,208.60x = 208,581,439,675,769,472
  5. Step 5: Solve for x
    x = 208,581,439,675,769,472/629,861,208.60
  6. Step 6: Final answer
    x = 331,154,604.90

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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.