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Finding the Third Proportional to 328,779 and 707,454

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Solution

The third proportional to 328,779 and 707,454 is: 1,522,272.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,779 : 707,454 = 707,454 : x
  2. Step 2: Convert to fraction form
    328,779/707,454 = 707,454/x
  3. Step 3: Cross multiply
    328,779x = 707,454 × 707,454
  4. Step 4: Simplify right side
    328,779x = 500,491,162,116
  5. Step 5: Solve for x
    x = 500,491,162,116/328,779
  6. Step 6: Final answer
    x = 1,522,272.29

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.