Home / 1,987,447.06-2,981,171.52-639,609.52

Finding the Fourth Proportional to 1,987,447.06, 2,981,171.52 and 639,609.52

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Solution

The fourth proportional to 1,987,447.06, 2,981,171.52 and 639,609.52 is: 959,414.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,447.06 : 2,981,171.52 = 639,609.52 : x
  2. Step 2: Convert to fraction form
    1,987,447.06/2,981,171.52 = 639,609.52/x
  3. Step 3: Cross multiply
    1,987,447.06x = 2,981,171.52 × 639,609.52
  4. Step 4: Simplify right side
    1,987,447.06x = 1,906,785,684,944.87
  5. Step 5: Solve for x
    x = 1,906,785,684,944.87/1,987,447.06
  6. Step 6: Final answer
    x = 959,414.58

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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.