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Finding the Fourth Proportional to 978,455.02, 1,350,251.67 and 570,793.90

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Solution

The fourth proportional to 978,455.02, 1,350,251.67 and 570,793.90 is: 787,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,455.02 : 1,350,251.67 = 570,793.90 : x
  2. Step 2: Convert to fraction form
    978,455.02/1,350,251.67 = 570,793.90/x
  3. Step 3: Cross multiply
    978,455.02x = 1,350,251.67 × 570,793.90
  4. Step 4: Simplify right side
    978,455.02x = 770,715,416,700.81
  5. Step 5: Solve for x
    x = 770,715,416,700.81/978,455.02
  6. Step 6: Final answer
    x = 787,686.10

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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.