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Finding the Third Proportional to 291,636 and 635,976

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Solution

The third proportional to 291,636 and 635,976 is: 1,386,884.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,636 : 635,976 = 635,976 : x
  2. Step 2: Convert to fraction form
    291,636/635,976 = 635,976/x
  3. Step 3: Cross multiply
    291,636x = 635,976 × 635,976
  4. Step 4: Simplify right side
    291,636x = 404,465,472,576
  5. Step 5: Solve for x
    x = 404,465,472,576/291,636
  6. Step 6: Final answer
    x = 1,386,884.58

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.