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Finding the Fourth Proportional to 404,758.69, 558,047.78 and 331,893.11

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Solution

The fourth proportional to 404,758.69, 558,047.78 and 331,893.11 is: 457,586.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,758.69 : 558,047.78 = 331,893.11 : x
  2. Step 2: Convert to fraction form
    404,758.69/558,047.78 = 331,893.11/x
  3. Step 3: Cross multiply
    404,758.69x = 558,047.78 × 331,893.11
  4. Step 4: Simplify right side
    404,758.69x = 185,212,214,213.05
  5. Step 5: Solve for x
    x = 185,212,214,213.05/404,758.69
  6. Step 6: Final answer
    x = 457,586.75

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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.