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Finding the Third Proportional to 312,715 and 682,774

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Solution

The third proportional to 312,715 and 682,774 is: 1,490,751.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,715 : 682,774 = 682,774 : x
  2. Step 2: Convert to fraction form
    312,715/682,774 = 682,774/x
  3. Step 3: Cross multiply
    312,715x = 682,774 × 682,774
  4. Step 4: Simplify right side
    312,715x = 466,180,335,076
  5. Step 5: Solve for x
    x = 466,180,335,076/312,715
  6. Step 6: Final answer
    x = 1,490,751.44

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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.