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Finding the Fourth Proportional to 454,891.28, 681,783.36 and 321,809.96

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Solution

The fourth proportional to 454,891.28, 681,783.36 and 321,809.96 is: 482,323.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,891.28 : 681,783.36 = 321,809.96 : x
  2. Step 2: Convert to fraction form
    454,891.28/681,783.36 = 321,809.96/x
  3. Step 3: Cross multiply
    454,891.28x = 681,783.36 × 321,809.96
  4. Step 4: Simplify right side
    454,891.28x = 219,404,675,810.27
  5. Step 5: Solve for x
    x = 219,404,675,810.27/454,891.28
  6. Step 6: Final answer
    x = 482,323.33

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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.