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Finding the Third Proportional to 318,242 and 693,292

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Solution

The third proportional to 318,242 and 693,292 is: 1,510,340.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,242 : 693,292 = 693,292 : x
  2. Step 2: Convert to fraction form
    318,242/693,292 = 693,292/x
  3. Step 3: Cross multiply
    318,242x = 693,292 × 693,292
  4. Step 4: Simplify right side
    318,242x = 480,653,797,264
  5. Step 5: Solve for x
    x = 480,653,797,264/318,242
  6. Step 6: Final answer
    x = 1,510,340.55

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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.