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Finding the Third Proportional to 259,478 and 561,603

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Solution

The third proportional to 259,478 and 561,603 is: 1,215,509.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,478 : 561,603 = 561,603 : x
  2. Step 2: Convert to fraction form
    259,478/561,603 = 561,603/x
  3. Step 3: Cross multiply
    259,478x = 561,603 × 561,603
  4. Step 4: Simplify right side
    259,478x = 315,397,929,609
  5. Step 5: Solve for x
    x = 315,397,929,609/259,478
  6. Step 6: Final answer
    x = 1,215,509.33

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.