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Finding the Third Proportional to 513,678 and 681,777

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Solution

The third proportional to 513,678 and 681,777 is: 904,885.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,678 : 681,777 = 681,777 : x
  2. Step 2: Convert to fraction form
    513,678/681,777 = 681,777/x
  3. Step 3: Cross multiply
    513,678x = 681,777 × 681,777
  4. Step 4: Simplify right side
    513,678x = 464,819,877,729
  5. Step 5: Solve for x
    x = 464,819,877,729/513,678
  6. Step 6: Final answer
    x = 904,885.70

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.