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Finding the Third Proportional to 380,809 and 827,172

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Solution

The third proportional to 380,809 and 827,172 is: 1,796,736.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,809 : 827,172 = 827,172 : x
  2. Step 2: Convert to fraction form
    380,809/827,172 = 827,172/x
  3. Step 3: Cross multiply
    380,809x = 827,172 × 827,172
  4. Step 4: Simplify right side
    380,809x = 684,213,517,584
  5. Step 5: Solve for x
    x = 684,213,517,584/380,809
  6. Step 6: Final answer
    x = 1,796,736.73

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.