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Finding the Fourth Proportional to 489,311.82, 675,553.10 and 326,198.07

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Solution

The fourth proportional to 489,311.82, 675,553.10 and 326,198.07 is: 450,355.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,311.82 : 675,553.10 = 326,198.07 : x
  2. Step 2: Convert to fraction form
    489,311.82/675,553.10 = 326,198.07/x
  3. Step 3: Cross multiply
    489,311.82x = 675,553.10 × 326,198.07
  4. Step 4: Simplify right side
    489,311.82x = 220,364,115,771.53
  5. Step 5: Solve for x
    x = 220,364,115,771.53/489,311.82
  6. Step 6: Final answer
    x = 450,355.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.