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Finding the Fourth Proportional to 574,465.57, 861,099.36 and 321,375

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Solution

The fourth proportional to 574,465.57, 861,099.36 and 321,375 is: 481,727.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,465.57 : 861,099.36 = 321,375 : x
  2. Step 2: Convert to fraction form
    574,465.57/861,099.36 = 321,375/x
  3. Step 3: Cross multiply
    574,465.57x = 861,099.36 × 321,375
  4. Step 4: Simplify right side
    574,465.57x = 276,735,806,820
  5. Step 5: Solve for x
    x = 276,735,806,820/574,465.57
  6. Step 6: Final answer
    x = 481,727.40

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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.