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Finding the Third Proportional to 306,736 and 628,346

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Solution

The third proportional to 306,736 and 628,346 is: 1,287,161.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,736 : 628,346 = 628,346 : x
  2. Step 2: Convert to fraction form
    306,736/628,346 = 628,346/x
  3. Step 3: Cross multiply
    306,736x = 628,346 × 628,346
  4. Step 4: Simplify right side
    306,736x = 394,818,695,716
  5. Step 5: Solve for x
    x = 394,818,695,716/306,736
  6. Step 6: Final answer
    x = 1,287,161.26

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.