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Finding the Fourth Proportional to 629,790.72, 944,708.76 and 156,478.56

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Solution

The fourth proportional to 629,790.72, 944,708.76 and 156,478.56 is: 234,723.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,790.72 : 944,708.76 = 156,478.56 : x
  2. Step 2: Convert to fraction form
    629,790.72/944,708.76 = 156,478.56/x
  3. Step 3: Cross multiply
    629,790.72x = 944,708.76 × 156,478.56
  4. Step 4: Simplify right side
    629,790.72x = 147,826,666,384.19
  5. Step 5: Solve for x
    x = 147,826,666,384.19/629,790.72
  6. Step 6: Final answer
    x = 234,723.48

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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.