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Finding the Fourth Proportional to 574,571.35, 861,258.32 and 321,480.78

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Solution

The fourth proportional to 574,571.35, 861,258.32 and 321,480.78 is: 481,886.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,571.35 : 861,258.32 = 321,480.78 : x
  2. Step 2: Convert to fraction form
    574,571.35/861,258.32 = 321,480.78/x
  3. Step 3: Cross multiply
    574,571.35x = 861,258.32 × 321,480.78
  4. Step 4: Simplify right side
    574,571.35x = 276,877,992,863.52
  5. Step 5: Solve for x
    x = 276,877,992,863.52/574,571.35
  6. Step 6: Final answer
    x = 481,886.18

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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.