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Finding the Third Proportional to 288,012 and 430,866

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Solution

The third proportional to 288,012 and 430,866 is: 644,575.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,012 : 430,866 = 430,866 : x
  2. Step 2: Convert to fraction form
    288,012/430,866 = 430,866/x
  3. Step 3: Cross multiply
    288,012x = 430,866 × 430,866
  4. Step 4: Simplify right side
    288,012x = 185,645,509,956
  5. Step 5: Solve for x
    x = 185,645,509,956/288,012
  6. Step 6: Final answer
    x = 644,575.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.