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Finding the Third Proportional to 405,911 and 652,230

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Solution

The third proportional to 405,911 and 652,230 is: 1,048,022.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,911 : 652,230 = 652,230 : x
  2. Step 2: Convert to fraction form
    405,911/652,230 = 652,230/x
  3. Step 3: Cross multiply
    405,911x = 652,230 × 652,230
  4. Step 4: Simplify right side
    405,911x = 425,403,972,900
  5. Step 5: Solve for x
    x = 425,403,972,900/405,911
  6. Step 6: Final answer
    x = 1,048,022.78

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.