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Finding the Third Proportional to 328,809 and 718,498

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Solution

The third proportional to 328,809 and 718,498 is: 1,570,028.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,809 : 718,498 = 718,498 : x
  2. Step 2: Convert to fraction form
    328,809/718,498 = 718,498/x
  3. Step 3: Cross multiply
    328,809x = 718,498 × 718,498
  4. Step 4: Simplify right side
    328,809x = 516,239,376,004
  5. Step 5: Solve for x
    x = 516,239,376,004/328,809
  6. Step 6: Final answer
    x = 1,570,028.12

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.