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Finding the Fourth Proportional to 638,082.28, 880,872.42 and 494,520.04

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Solution

The fourth proportional to 638,082.28, 880,872.42 and 494,520.04 is: 682,684.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,082.28 : 880,872.42 = 494,520.04 : x
  2. Step 2: Convert to fraction form
    638,082.28/880,872.42 = 494,520.04/x
  3. Step 3: Cross multiply
    638,082.28x = 880,872.42 × 494,520.04
  4. Step 4: Simplify right side
    638,082.28x = 435,609,064,373.30
  5. Step 5: Solve for x
    x = 435,609,064,373.30/638,082.28
  6. Step 6: Final answer
    x = 682,684.79

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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.