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Finding the Fourth Proportional to 443,398.62, 611,708.94 and 327,390.12

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Solution

The fourth proportional to 443,398.62, 611,708.94 and 327,390.12 is: 451,664.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,398.62 : 611,708.94 = 327,390.12 : x
  2. Step 2: Convert to fraction form
    443,398.62/611,708.94 = 327,390.12/x
  3. Step 3: Cross multiply
    443,398.62x = 611,708.94 × 327,390.12
  4. Step 4: Simplify right side
    443,398.62x = 200,267,463,271.67
  5. Step 5: Solve for x
    x = 200,267,463,271.67/443,398.62
  6. Step 6: Final answer
    x = 451,664.61

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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.