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Finding the Third Proportional to 451,396 and 685,959

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Solution

The third proportional to 451,396 and 685,959 is: 1,042,410.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,396 : 685,959 = 685,959 : x
  2. Step 2: Convert to fraction form
    451,396/685,959 = 685,959/x
  3. Step 3: Cross multiply
    451,396x = 685,959 × 685,959
  4. Step 4: Simplify right side
    451,396x = 470,539,749,681
  5. Step 5: Solve for x
    x = 470,539,749,681/451,396
  6. Step 6: Final answer
    x = 1,042,410.10

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.