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Finding the Fourth Proportional to 404,788.98, 606,238.86 and 319,979.82

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Solution

The fourth proportional to 404,788.98, 606,238.86 and 319,979.82 is: 479,223.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,788.98 : 606,238.86 = 319,979.82 : x
  2. Step 2: Convert to fraction form
    404,788.98/606,238.86 = 319,979.82/x
  3. Step 3: Cross multiply
    404,788.98x = 606,238.86 × 319,979.82
  4. Step 4: Simplify right side
    404,788.98x = 193,984,201,299.81
  5. Step 5: Solve for x
    x = 193,984,201,299.81/404,788.98
  6. Step 6: Final answer
    x = 479,223.03

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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.