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Finding the Fourth Proportional to 978,454.89, 1,350,251.49 and 570,793.77

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Solution

The fourth proportional to 978,454.89, 1,350,251.49 and 570,793.77 is: 787,685.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,454.89 : 1,350,251.49 = 570,793.77 : x
  2. Step 2: Convert to fraction form
    978,454.89/1,350,251.49 = 570,793.77/x
  3. Step 3: Cross multiply
    978,454.89x = 1,350,251.49 × 570,793.77
  4. Step 4: Simplify right side
    978,454.89x = 770,715,138,425.22
  5. Step 5: Solve for x
    x = 770,715,138,425.22/978,454.89
  6. Step 6: Final answer
    x = 787,685.92

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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.