Home / 858,781.20-1,288,171.80-699,348.90

Finding the Fourth Proportional to 858,781.20, 1,288,171.80 and 699,348.90

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Solution

The fourth proportional to 858,781.20, 1,288,171.80 and 699,348.90 is: 1,049,023.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,781.20 : 1,288,171.80 = 699,348.90 : x
  2. Step 2: Convert to fraction form
    858,781.20/1,288,171.80 = 699,348.90/x
  3. Step 3: Cross multiply
    858,781.20x = 1,288,171.80 × 699,348.90
  4. Step 4: Simplify right side
    858,781.20x = 900,881,531,341.02
  5. Step 5: Solve for x
    x = 900,881,531,341.02/858,781.20
  6. Step 6: Final answer
    x = 1,049,023.35

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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.