Home / 1,987,432.44-2,981,149.60-639,594.89

Finding the Fourth Proportional to 1,987,432.44, 2,981,149.60 and 639,594.89

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Solution

The fourth proportional to 1,987,432.44, 2,981,149.60 and 639,594.89 is: 959,392.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,432.44 : 2,981,149.60 = 639,594.89 : x
  2. Step 2: Convert to fraction form
    1,987,432.44/2,981,149.60 = 639,594.89/x
  3. Step 3: Cross multiply
    1,987,432.44x = 2,981,149.60 × 639,594.89
  4. Step 4: Simplify right side
    1,987,432.44x = 1,906,728,050,485.54
  5. Step 5: Solve for x
    x = 1,906,728,050,485.54/1,987,432.44
  6. Step 6: Final answer
    x = 959,392.64

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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.