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Finding the Fourth Proportional to 447,998.36, 672,095.90 and 329,309.86

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Solution

The fourth proportional to 447,998.36, 672,095.90 and 329,309.86 is: 494,037.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,998.36 : 672,095.90 = 329,309.86 : x
  2. Step 2: Convert to fraction form
    447,998.36/672,095.90 = 329,309.86/x
  3. Step 3: Cross multiply
    447,998.36x = 672,095.90 × 329,309.86
  4. Step 4: Simplify right side
    447,998.36x = 221,327,806,735.57
  5. Step 5: Solve for x
    x = 221,327,806,735.57/447,998.36
  6. Step 6: Final answer
    x = 494,037.09

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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.