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Finding the Third Proportional to 328,388 and 707,436

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Solution

The third proportional to 328,388 and 707,436 is: 1,524,007.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,388 : 707,436 = 707,436 : x
  2. Step 2: Convert to fraction form
    328,388/707,436 = 707,436/x
  3. Step 3: Cross multiply
    328,388x = 707,436 × 707,436
  4. Step 4: Simplify right side
    328,388x = 500,465,694,096
  5. Step 5: Solve for x
    x = 500,465,694,096/328,388
  6. Step 6: Final answer
    x = 1,524,007.25

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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.