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Finding the Third Proportional to 311,742 and 660,582

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Solution

The third proportional to 311,742 and 660,582 is: 1,399,774.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,742 : 660,582 = 660,582 : x
  2. Step 2: Convert to fraction form
    311,742/660,582 = 660,582/x
  3. Step 3: Cross multiply
    311,742x = 660,582 × 660,582
  4. Step 4: Simplify right side
    311,742x = 436,368,578,724
  5. Step 5: Solve for x
    x = 436,368,578,724/311,742
  6. Step 6: Final answer
    x = 1,399,774.75

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.