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Finding the Third Proportional to 290,449 and 636,794

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Solution

The third proportional to 290,449 and 636,794 is: 1,396,137.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,449 : 636,794 = 636,794 : x
  2. Step 2: Convert to fraction form
    290,449/636,794 = 636,794/x
  3. Step 3: Cross multiply
    290,449x = 636,794 × 636,794
  4. Step 4: Simplify right side
    290,449x = 405,506,598,436
  5. Step 5: Solve for x
    x = 405,506,598,436/290,449
  6. Step 6: Final answer
    x = 1,396,137.01

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.