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Finding the Third Proportional to 328,330 and 718,939

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Solution

The third proportional to 328,330 and 718,939 is: 1,574,249.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,330 : 718,939 = 718,939 : x
  2. Step 2: Convert to fraction form
    328,330/718,939 = 718,939/x
  3. Step 3: Cross multiply
    328,330x = 718,939 × 718,939
  4. Step 4: Simplify right side
    328,330x = 516,873,285,721
  5. Step 5: Solve for x
    x = 516,873,285,721/328,330
  6. Step 6: Final answer
    x = 1,574,249.34

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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.