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Finding the Third Proportional to 321,381 and 699,927.75

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Solution

The third proportional to 321,381 and 699,927.75 is: 1,524,355.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,381 : 699,927.75 = 699,927.75 : x
  2. Step 2: Convert to fraction form
    321,381/699,927.75 = 699,927.75/x
  3. Step 3: Cross multiply
    321,381x = 699,927.75 × 699,927.75
  4. Step 4: Simplify right side
    321,381x = 489,898,855,220.06
  5. Step 5: Solve for x
    x = 489,898,855,220.06/321,381
  6. Step 6: Final answer
    x = 1,524,355.38

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.