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Finding the Third Proportional to 326,000 and 691,248

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Solution

The third proportional to 326,000 and 691,248 is: 1,465,717.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,000 : 691,248 = 691,248 : x
  2. Step 2: Convert to fraction form
    326,000/691,248 = 691,248/x
  3. Step 3: Cross multiply
    326,000x = 691,248 × 691,248
  4. Step 4: Simplify right side
    326,000x = 477,823,797,504
  5. Step 5: Solve for x
    x = 477,823,797,504/326,000
  6. Step 6: Final answer
    x = 1,465,717.17

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.