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Finding the Fourth Proportional to 865,891.34, 1,298,286.85 and 759,489

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Solution

The fourth proportional to 865,891.34, 1,298,286.85 and 759,489 is: 1,138,750.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,891.34 : 1,298,286.85 = 759,489 : x
  2. Step 2: Convert to fraction form
    865,891.34/1,298,286.85 = 759,489/x
  3. Step 3: Cross multiply
    865,891.34x = 1,298,286.85 × 759,489
  4. Step 4: Simplify right side
    865,891.34x = 986,034,581,419.65
  5. Step 5: Solve for x
    x = 986,034,581,419.65/865,891.34
  6. Step 6: Final answer
    x = 1,138,750.94

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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.