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Finding the Fourth Proportional to 574,961.89, 861,489.41 and 349,640.75

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Solution

The fourth proportional to 574,961.89, 861,489.41 and 349,640.75 is: 523,881.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,961.89 : 861,489.41 = 349,640.75 : x
  2. Step 2: Convert to fraction form
    574,961.89/861,489.41 = 349,640.75/x
  3. Step 3: Cross multiply
    574,961.89x = 861,489.41 × 349,640.75
  4. Step 4: Simplify right side
    574,961.89x = 301,211,797,373.81
  5. Step 5: Solve for x
    x = 301,211,797,373.81/574,961.89
  6. Step 6: Final answer
    x = 523,881.33

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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.