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Finding the Fourth Proportional to 981,321.70, 1,471,982.55 and 981,321.70

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Solution

The fourth proportional to 981,321.70, 1,471,982.55 and 981,321.70 is: 1,471,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,321.70 : 1,471,982.55 = 981,321.70 : x
  2. Step 2: Convert to fraction form
    981,321.70/1,471,982.55 = 981,321.70/x
  3. Step 3: Cross multiply
    981,321.70x = 1,471,982.55 × 981,321.70
  4. Step 4: Simplify right side
    981,321.70x = 1,444,488,418,336.34
  5. Step 5: Solve for x
    x = 1,444,488,418,336.34/981,321.70
  6. Step 6: Final answer
    x = 1,471,982.55

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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.