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Finding the Third Proportional to 313,794 and 690,930

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Solution

The third proportional to 313,794 and 690,930 is: 1,521,330.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,794 : 690,930 = 690,930 : x
  2. Step 2: Convert to fraction form
    313,794/690,930 = 690,930/x
  3. Step 3: Cross multiply
    313,794x = 690,930 × 690,930
  4. Step 4: Simplify right side
    313,794x = 477,384,264,900
  5. Step 5: Solve for x
    x = 477,384,264,900/313,794
  6. Step 6: Final answer
    x = 1,521,330.12

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.