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Finding the Fourth Proportional to 574,961.95, 861,489.50 and 349,640.81

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Solution

The fourth proportional to 574,961.95, 861,489.50 and 349,640.81 is: 523,881.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,961.95 : 861,489.50 = 349,640.81 : x
  2. Step 2: Convert to fraction form
    574,961.95/861,489.50 = 349,640.81/x
  3. Step 3: Cross multiply
    574,961.95x = 861,489.50 × 349,640.81
  4. Step 4: Simplify right side
    574,961.95x = 301,211,885,728.16
  5. Step 5: Solve for x
    x = 301,211,885,728.16/574,961.95
  6. Step 6: Final answer
    x = 523,881.42

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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.