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Finding the Fourth Proportional to 978,452.02, 1,350,247.54 and 570,790.90

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Solution

The fourth proportional to 978,452.02, 1,350,247.54 and 570,790.90 is: 787,681.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,452.02 : 1,350,247.54 = 570,790.90 : x
  2. Step 2: Convert to fraction form
    978,452.02/1,350,247.54 = 570,790.90/x
  3. Step 3: Cross multiply
    978,452.02x = 1,350,247.54 × 570,790.90
  4. Step 4: Simplify right side
    978,452.02x = 770,708,998,974.19
  5. Step 5: Solve for x
    x = 770,708,998,974.19/978,452.02
  6. Step 6: Final answer
    x = 787,681.96

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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.