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Finding the Third Proportional to 318,750 and 693,580

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Solution

The third proportional to 318,750 and 693,580 is: 1,509,186.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,750 : 693,580 = 693,580 : x
  2. Step 2: Convert to fraction form
    318,750/693,580 = 693,580/x
  3. Step 3: Cross multiply
    318,750x = 693,580 × 693,580
  4. Step 4: Simplify right side
    318,750x = 481,053,216,400
  5. Step 5: Solve for x
    x = 481,053,216,400/318,750
  6. Step 6: Final answer
    x = 1,509,186.56

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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.