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Finding the Third Proportional to 290,668 and 625,860

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Solution

The third proportional to 290,668 and 625,860 is: 1,347,588.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,668 : 625,860 = 625,860 : x
  2. Step 2: Convert to fraction form
    290,668/625,860 = 625,860/x
  3. Step 3: Cross multiply
    290,668x = 625,860 × 625,860
  4. Step 4: Simplify right side
    290,668x = 391,700,739,600
  5. Step 5: Solve for x
    x = 391,700,739,600/290,668
  6. Step 6: Final answer
    x = 1,347,588.11

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.