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Finding the Third Proportional to 317,176 and 491,872

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Solution

The third proportional to 317,176 and 491,872 is: 762,788.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,176 : 491,872 = 491,872 : x
  2. Step 2: Convert to fraction form
    317,176/491,872 = 491,872/x
  3. Step 3: Cross multiply
    317,176x = 491,872 × 491,872
  4. Step 4: Simplify right side
    317,176x = 241,938,064,384
  5. Step 5: Solve for x
    x = 241,938,064,384/317,176
  6. Step 6: Final answer
    x = 762,788.06

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.