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Finding the Third Proportional to 279,120 and 409,608

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Solution

The third proportional to 279,120 and 409,608 is: 601,098.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,120 : 409,608 = 409,608 : x
  2. Step 2: Convert to fraction form
    279,120/409,608 = 409,608/x
  3. Step 3: Cross multiply
    279,120x = 409,608 × 409,608
  4. Step 4: Simplify right side
    279,120x = 167,778,713,664
  5. Step 5: Solve for x
    x = 167,778,713,664/279,120
  6. Step 6: Final answer
    x = 601,098.86

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.