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Finding the Third Proportional to 441,928 and 691,316

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Solution

The third proportional to 441,928 and 691,316 is: 1,081,438.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,928 : 691,316 = 691,316 : x
  2. Step 2: Convert to fraction form
    441,928/691,316 = 691,316/x
  3. Step 3: Cross multiply
    441,928x = 691,316 × 691,316
  4. Step 4: Simplify right side
    441,928x = 477,917,811,856
  5. Step 5: Solve for x
    x = 477,917,811,856/441,928
  6. Step 6: Final answer
    x = 1,081,438.18

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.