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Finding the Fourth Proportional to 981,600.20, 1,472,419 and 307,666.72

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Solution

The fourth proportional to 981,600.20, 1,472,419 and 307,666.72 is: 461,505.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,600.20 : 1,472,419 = 307,666.72 : x
  2. Step 2: Convert to fraction form
    981,600.20/1,472,419 = 307,666.72/x
  3. Step 3: Cross multiply
    981,600.20x = 1,472,419 × 307,666.72
  4. Step 4: Simplify right side
    981,600.20x = 453,014,324,195.68
  5. Step 5: Solve for x
    x = 453,014,324,195.68/981,600.20
  6. Step 6: Final answer
    x = 461,505.94

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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.