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Finding the Third Proportional to 279,608 and 608,368

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Solution

The third proportional to 279,608 and 608,368 is: 1,323,680.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,608 : 608,368 = 608,368 : x
  2. Step 2: Convert to fraction form
    279,608/608,368 = 608,368/x
  3. Step 3: Cross multiply
    279,608x = 608,368 × 608,368
  4. Step 4: Simplify right side
    279,608x = 370,111,623,424
  5. Step 5: Solve for x
    x = 370,111,623,424/279,608
  6. Step 6: Final answer
    x = 1,323,680.38

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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.