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Finding the Third Proportional to 376,849 and 821,343

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Solution

The third proportional to 376,849 and 821,343 is: 1,790,118.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,849 : 821,343 = 821,343 : x
  2. Step 2: Convert to fraction form
    376,849/821,343 = 821,343/x
  3. Step 3: Cross multiply
    376,849x = 821,343 × 821,343
  4. Step 4: Simplify right side
    376,849x = 674,604,323,649
  5. Step 5: Solve for x
    x = 674,604,323,649/376,849
  6. Step 6: Final answer
    x = 1,790,118.39

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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.