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Finding the Third Proportional to 326,286 and 670,140

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Solution

The third proportional to 326,286 and 670,140 is: 1,376,361.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,286 : 670,140 = 670,140 : x
  2. Step 2: Convert to fraction form
    326,286/670,140 = 670,140/x
  3. Step 3: Cross multiply
    326,286x = 670,140 × 670,140
  4. Step 4: Simplify right side
    326,286x = 449,087,619,600
  5. Step 5: Solve for x
    x = 449,087,619,600/326,286
  6. Step 6: Final answer
    x = 1,376,361.90

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.