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Finding the Third Proportional to 380,778 and 827,205

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Solution

The third proportional to 380,778 and 827,205 is: 1,797,026.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,778 : 827,205 = 827,205 : x
  2. Step 2: Convert to fraction form
    380,778/827,205 = 827,205/x
  3. Step 3: Cross multiply
    380,778x = 827,205 × 827,205
  4. Step 4: Simplify right side
    380,778x = 684,268,112,025
  5. Step 5: Solve for x
    x = 684,268,112,025/380,778
  6. Step 6: Final answer
    x = 1,797,026.38

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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.