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Finding the Third Proportional to 317,576 and 493,860

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Solution

The third proportional to 317,576 and 493,860 is: 767,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,576 : 493,860 = 493,860 : x
  2. Step 2: Convert to fraction form
    317,576/493,860 = 493,860/x
  3. Step 3: Cross multiply
    317,576x = 493,860 × 493,860
  4. Step 4: Simplify right side
    317,576x = 243,897,699,600
  5. Step 5: Solve for x
    x = 243,897,699,600/317,576
  6. Step 6: Final answer
    x = 767,997.90

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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.