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Finding the Third Proportional to 317,736 and 698,442

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Solution

The third proportional to 317,736 and 698,442 is: 1,535,303.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,736 : 698,442 = 698,442 : x
  2. Step 2: Convert to fraction form
    317,736/698,442 = 698,442/x
  3. Step 3: Cross multiply
    317,736x = 698,442 × 698,442
  4. Step 4: Simplify right side
    317,736x = 487,821,227,364
  5. Step 5: Solve for x
    x = 487,821,227,364/317,736
  6. Step 6: Final answer
    x = 1,535,303.61

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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.