Home / 781,888.22-1,078,449.38-717,565.22

Finding the Fourth Proportional to 781,888.22, 1,078,449.38 and 717,565.22

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Solution

The fourth proportional to 781,888.22, 1,078,449.38 and 717,565.22 is: 989,729.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,888.22 : 1,078,449.38 = 717,565.22 : x
  2. Step 2: Convert to fraction form
    781,888.22/1,078,449.38 = 717,565.22/x
  3. Step 3: Cross multiply
    781,888.22x = 1,078,449.38 × 717,565.22
  4. Step 4: Simplify right side
    781,888.22x = 773,857,766,618.56
  5. Step 5: Solve for x
    x = 773,857,766,618.56/781,888.22
  6. Step 6: Final answer
    x = 989,729.41

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1.5x scale

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.