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Finding the Fourth Proportional to 404,786.97, 606,235.86 and 319,977.81

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Solution

The fourth proportional to 404,786.97, 606,235.86 and 319,977.81 is: 479,220.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,786.97 : 606,235.86 = 319,977.81 : x
  2. Step 2: Convert to fraction form
    404,786.97/606,235.86 = 319,977.81/x
  3. Step 3: Cross multiply
    404,786.97x = 606,235.86 × 319,977.81
  4. Step 4: Simplify right side
    404,786.97x = 193,982,022,826.27
  5. Step 5: Solve for x
    x = 193,982,022,826.27/404,786.97
  6. Step 6: Final answer
    x = 479,220.03

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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.