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Finding the Third Proportional to 422,487 and 939,435

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Solution

The third proportional to 422,487 and 939,435 is: 2,088,911.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,487 : 939,435 = 939,435 : x
  2. Step 2: Convert to fraction form
    422,487/939,435 = 939,435/x
  3. Step 3: Cross multiply
    422,487x = 939,435 × 939,435
  4. Step 4: Simplify right side
    422,487x = 882,538,119,225
  5. Step 5: Solve for x
    x = 882,538,119,225/422,487
  6. Step 6: Final answer
    x = 2,088,911.89

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.