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Finding the Third Proportional to 288,329 and 619,279

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Solution

The third proportional to 288,329 and 619,279 is: 1,330,100.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,329 : 619,279 = 619,279 : x
  2. Step 2: Convert to fraction form
    288,329/619,279 = 619,279/x
  3. Step 3: Cross multiply
    288,329x = 619,279 × 619,279
  4. Step 4: Simplify right side
    288,329x = 383,506,479,841
  5. Step 5: Solve for x
    x = 383,506,479,841/288,329
  6. Step 6: Final answer
    x = 1,330,100.27

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.