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Finding the Fourth Proportional to 652,241.72, 900,102.78 and 394,082.75

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Solution

The fourth proportional to 652,241.72, 900,102.78 and 394,082.75 is: 543,839.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,241.72 : 900,102.78 = 394,082.75 : x
  2. Step 2: Convert to fraction form
    652,241.72/900,102.78 = 394,082.75/x
  3. Step 3: Cross multiply
    652,241.72x = 900,102.78 × 394,082.75
  4. Step 4: Simplify right side
    652,241.72x = 354,714,974,324.53
  5. Step 5: Solve for x
    x = 354,714,974,324.53/652,241.72
  6. Step 6: Final answer
    x = 543,839.75

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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.