Home / 1,987,431.44-2,981,148.10-639,593.89

Finding the Fourth Proportional to 1,987,431.44, 2,981,148.10 and 639,593.89

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Solution

The fourth proportional to 1,987,431.44, 2,981,148.10 and 639,593.89 is: 959,391.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,431.44 : 2,981,148.10 = 639,593.89 : x
  2. Step 2: Convert to fraction form
    1,987,431.44/2,981,148.10 = 639,593.89/x
  3. Step 3: Cross multiply
    1,987,431.44x = 2,981,148.10 × 639,593.89
  4. Step 4: Simplify right side
    1,987,431.44x = 1,906,724,100,893.25
  5. Step 5: Solve for x
    x = 1,906,724,100,893.25/1,987,431.44
  6. Step 6: Final answer
    x = 959,391.13

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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.