Home / 1,290,257.27-1,780,454.17-717,262.55

Finding the Fourth Proportional to 1,290,257.27, 1,780,454.17 and 717,262.55

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Solution

The fourth proportional to 1,290,257.27, 1,780,454.17 and 717,262.55 is: 989,766.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,257.27 : 1,780,454.17 = 717,262.55 : x
  2. Step 2: Convert to fraction form
    1,290,257.27/1,780,454.17 = 717,262.55/x
  3. Step 3: Cross multiply
    1,290,257.27x = 1,780,454.17 × 717,262.55
  4. Step 4: Simplify right side
    1,290,257.27x = 1,277,053,098,132.33
  5. Step 5: Solve for x
    x = 1,277,053,098,132.33/1,290,257.27
  6. Step 6: Final answer
    x = 989,766.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.