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Finding the Third Proportional to 289,662 and 605,805

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Solution

The third proportional to 289,662 and 605,805 is: 1,266,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,662 : 605,805 = 605,805 : x
  2. Step 2: Convert to fraction form
    289,662/605,805 = 605,805/x
  3. Step 3: Cross multiply
    289,662x = 605,805 × 605,805
  4. Step 4: Simplify right side
    289,662x = 366,999,698,025
  5. Step 5: Solve for x
    x = 366,999,698,025/289,662
  6. Step 6: Final answer
    x = 1,266,992.90

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.