Home / 645,471.33-967,321.24-408,389.59

Finding the Fourth Proportional to 645,471.33, 967,321.24 and 408,389.59

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Solution

The fourth proportional to 645,471.33, 967,321.24 and 408,389.59 is: 612,023.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,471.33 : 967,321.24 = 408,389.59 : x
  2. Step 2: Convert to fraction form
    645,471.33/967,321.24 = 408,389.59/x
  3. Step 3: Cross multiply
    645,471.33x = 967,321.24 × 408,389.59
  4. Step 4: Simplify right side
    645,471.33x = 395,043,924,601.89
  5. Step 5: Solve for x
    x = 395,043,924,601.89/645,471.33
  6. Step 6: Final answer
    x = 612,023.97

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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.