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Finding the Third Proportional to 291,196 and 636,692

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Solution

The third proportional to 291,196 and 636,692 is: 1,392,109.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,196 : 636,692 = 636,692 : x
  2. Step 2: Convert to fraction form
    291,196/636,692 = 636,692/x
  3. Step 3: Cross multiply
    291,196x = 636,692 × 636,692
  4. Step 4: Simplify right side
    291,196x = 405,376,702,864
  5. Step 5: Solve for x
    x = 405,376,702,864/291,196
  6. Step 6: Final answer
    x = 1,392,109.45

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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.