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Finding the Fourth Proportional to 404,449.40, 606,803.70 and 271,479.80

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Solution

The fourth proportional to 404,449.40, 606,803.70 and 271,479.80 is: 407,306.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,449.40 : 606,803.70 = 271,479.80 : x
  2. Step 2: Convert to fraction form
    404,449.40/606,803.70 = 271,479.80/x
  3. Step 3: Cross multiply
    404,449.40x = 606,803.70 × 271,479.80
  4. Step 4: Simplify right side
    404,449.40x = 164,734,947,115.26
  5. Step 5: Solve for x
    x = 164,734,947,115.26/404,449.40
  6. Step 6: Final answer
    x = 407,306.69

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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.