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Finding the Third Proportional to 512,380 and 818,538

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Solution

The third proportional to 512,380 and 818,538 is: 1,307,631.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,380 : 818,538 = 818,538 : x
  2. Step 2: Convert to fraction form
    512,380/818,538 = 818,538/x
  3. Step 3: Cross multiply
    512,380x = 818,538 × 818,538
  4. Step 4: Simplify right side
    512,380x = 670,004,457,444
  5. Step 5: Solve for x
    x = 670,004,457,444/512,380
  6. Step 6: Final answer
    x = 1,307,631.95

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.