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Finding the Third Proportional to 386,363 and 814,678

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Solution

The third proportional to 386,363 and 814,678 is: 1,717,815.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,363 : 814,678 = 814,678 : x
  2. Step 2: Convert to fraction form
    386,363/814,678 = 814,678/x
  3. Step 3: Cross multiply
    386,363x = 814,678 × 814,678
  4. Step 4: Simplify right side
    386,363x = 663,700,243,684
  5. Step 5: Solve for x
    x = 663,700,243,684/386,363
  6. Step 6: Final answer
    x = 1,717,815.22

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.