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Finding the Fourth Proportional to 500,800.52, 691,170.90 and 285,892.04

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Solution

The fourth proportional to 500,800.52, 691,170.90 and 285,892.04 is: 394,568.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,800.52 : 691,170.90 = 285,892.04 : x
  2. Step 2: Convert to fraction form
    500,800.52/691,170.90 = 285,892.04/x
  3. Step 3: Cross multiply
    500,800.52x = 691,170.90 × 285,892.04
  4. Step 4: Simplify right side
    500,800.52x = 197,600,258,589.64
  5. Step 5: Solve for x
    x = 197,600,258,589.64/500,800.52
  6. Step 6: Final answer
    x = 394,568.80

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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.