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Finding the Third Proportional to 305,880 and 660,960

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Solution

The third proportional to 305,880 and 660,960 is: 1,428,233.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,880 : 660,960 = 660,960 : x
  2. Step 2: Convert to fraction form
    305,880/660,960 = 660,960/x
  3. Step 3: Cross multiply
    305,880x = 660,960 × 660,960
  4. Step 4: Simplify right side
    305,880x = 436,868,121,600
  5. Step 5: Solve for x
    x = 436,868,121,600/305,880
  6. Step 6: Final answer
    x = 1,428,233.69

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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.