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Finding the Fourth Proportional to 978,367.66, 1,350,161.20 and 591,129.24

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Solution

The fourth proportional to 978,367.66, 1,350,161.20 and 591,129.24 is: 815,766.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,367.66 : 1,350,161.20 = 591,129.24 : x
  2. Step 2: Convert to fraction form
    978,367.66/1,350,161.20 = 591,129.24/x
  3. Step 3: Cross multiply
    978,367.66x = 1,350,161.20 × 591,129.24
  4. Step 4: Simplify right side
    978,367.66x = 798,119,764,033.49
  5. Step 5: Solve for x
    x = 798,119,764,033.49/978,367.66
  6. Step 6: Final answer
    x = 815,766.71

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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.