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Finding the Third Proportional to 317,644 and 698,260

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Solution

The third proportional to 317,644 and 698,260 is: 1,534,948.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,644 : 698,260 = 698,260 : x
  2. Step 2: Convert to fraction form
    317,644/698,260 = 698,260/x
  3. Step 3: Cross multiply
    317,644x = 698,260 × 698,260
  4. Step 4: Simplify right side
    317,644x = 487,567,027,600
  5. Step 5: Solve for x
    x = 487,567,027,600/317,644
  6. Step 6: Final answer
    x = 1,534,948.02

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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.