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Finding the Fourth Proportional to 500,877.12, 691,216.56 and 274,522.08

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Solution

The fourth proportional to 500,877.12, 691,216.56 and 274,522.08 is: 378,843.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,877.12 : 691,216.56 = 274,522.08 : x
  2. Step 2: Convert to fraction form
    500,877.12/691,216.56 = 274,522.08/x
  3. Step 3: Cross multiply
    500,877.12x = 691,216.56 × 274,522.08
  4. Step 4: Simplify right side
    500,877.12x = 189,754,207,781.65
  5. Step 5: Solve for x
    x = 189,754,207,781.65/500,877.12
  6. Step 6: Final answer
    x = 378,843.83

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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.