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Finding the Fourth Proportional to 389,628.80, 584,443.20 and 327,627.35

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Solution

The fourth proportional to 389,628.80, 584,443.20 and 327,627.35 is: 491,441.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,628.80 : 584,443.20 = 327,627.35 : x
  2. Step 2: Convert to fraction form
    389,628.80/584,443.20 = 327,627.35/x
  3. Step 3: Cross multiply
    389,628.80x = 584,443.20 × 327,627.35
  4. Step 4: Simplify right side
    389,628.80x = 191,479,576,841.52
  5. Step 5: Solve for x
    x = 191,479,576,841.52/389,628.80
  6. Step 6: Final answer
    x = 491,441.03

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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.