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Finding the Third Proportional to 383,213 and 580,121

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Solution

The third proportional to 383,213 and 580,121 is: 878,207.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,213 : 580,121 = 580,121 : x
  2. Step 2: Convert to fraction form
    383,213/580,121 = 580,121/x
  3. Step 3: Cross multiply
    383,213x = 580,121 × 580,121
  4. Step 4: Simplify right side
    383,213x = 336,540,374,641
  5. Step 5: Solve for x
    x = 336,540,374,641/383,213
  6. Step 6: Final answer
    x = 878,207.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.