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Finding the Third Proportional to 318,865.88 and 699,931.88

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Solution

The third proportional to 318,865.88 and 699,931.88 is: 1,536,397.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,865.88 : 699,931.88 = 699,931.88 : x
  2. Step 2: Convert to fraction form
    318,865.88/699,931.88 = 699,931.88/x
  3. Step 3: Cross multiply
    318,865.88x = 699,931.88 × 699,931.88
  4. Step 4: Simplify right side
    318,865.88x = 489,904,629,641.02
  5. Step 5: Solve for x
    x = 489,904,629,641.02/318,865.88
  6. Step 6: Final answer
    x = 1,536,397.18

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.