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Finding the Third Proportional to 318,895 and 493,747

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Solution

The third proportional to 318,895 and 493,747 is: 764,471.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,895 : 493,747 = 493,747 : x
  2. Step 2: Convert to fraction form
    318,895/493,747 = 493,747/x
  3. Step 3: Cross multiply
    318,895x = 493,747 × 493,747
  4. Step 4: Simplify right side
    318,895x = 243,786,100,009
  5. Step 5: Solve for x
    x = 243,786,100,009/318,895
  6. Step 6: Final answer
    x = 764,471.38

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.