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Finding the Third Proportional to 326,940 and 499,915

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Solution

The third proportional to 326,940 and 499,915 is: 764,406.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,940 : 499,915 = 499,915 : x
  2. Step 2: Convert to fraction form
    326,940/499,915 = 499,915/x
  3. Step 3: Cross multiply
    326,940x = 499,915 × 499,915
  4. Step 4: Simplify right side
    326,940x = 249,915,007,225
  5. Step 5: Solve for x
    x = 249,915,007,225/326,940
  6. Step 6: Final answer
    x = 764,406.34

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.