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Finding the Third Proportional to 328,741 and 707,420

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Solution

The third proportional to 328,741 and 707,420 is: 1,522,301.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,741 : 707,420 = 707,420 : x
  2. Step 2: Convert to fraction form
    328,741/707,420 = 707,420/x
  3. Step 3: Cross multiply
    328,741x = 707,420 × 707,420
  4. Step 4: Simplify right side
    328,741x = 500,443,056,400
  5. Step 5: Solve for x
    x = 500,443,056,400/328,741
  6. Step 6: Final answer
    x = 1,522,301.92

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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.