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Finding the Fourth Proportional to 981,003.88, 1,471,879.42 and 341,378.68

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Solution

The fourth proportional to 981,003.88, 1,471,879.42 and 341,378.68 is: 512,198.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,003.88 : 1,471,879.42 = 341,378.68 : x
  2. Step 2: Convert to fraction form
    981,003.88/1,471,879.42 = 341,378.68/x
  3. Step 3: Cross multiply
    981,003.88x = 1,471,879.42 × 341,378.68
  4. Step 4: Simplify right side
    981,003.88x = 502,468,253,518.77
  5. Step 5: Solve for x
    x = 502,468,253,518.77/981,003.88
  6. Step 6: Final answer
    x = 512,198.03

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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.