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Finding the Third Proportional to 447,981 and 693,639

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Solution

The third proportional to 447,981 and 693,639 is: 1,074,007.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,981 : 693,639 = 693,639 : x
  2. Step 2: Convert to fraction form
    447,981/693,639 = 693,639/x
  3. Step 3: Cross multiply
    447,981x = 693,639 × 693,639
  4. Step 4: Simplify right side
    447,981x = 481,135,062,321
  5. Step 5: Solve for x
    x = 481,135,062,321/447,981
  6. Step 6: Final answer
    x = 1,074,007.74

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.