Home / 1,987,446.06-2,981,170.02-639,608.52

Finding the Fourth Proportional to 1,987,446.06, 2,981,170.02 and 639,608.52

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Solution

The fourth proportional to 1,987,446.06, 2,981,170.02 and 639,608.52 is: 959,413.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,446.06 : 2,981,170.02 = 639,608.52 : x
  2. Step 2: Convert to fraction form
    1,987,446.06/2,981,170.02 = 639,608.52/x
  3. Step 3: Cross multiply
    1,987,446.06x = 2,981,170.02 × 639,608.52
  4. Step 4: Simplify right side
    1,987,446.06x = 1,906,781,744,360.57
  5. Step 5: Solve for x
    x = 1,906,781,744,360.57/1,987,446.06
  6. Step 6: Final answer
    x = 959,413.08

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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.