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Finding the Fourth Proportional to 412,260.60, 618,390.90 and 329,316.60

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Solution

The fourth proportional to 412,260.60, 618,390.90 and 329,316.60 is: 493,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,260.60 : 618,390.90 = 329,316.60 : x
  2. Step 2: Convert to fraction form
    412,260.60/618,390.90 = 329,316.60/x
  3. Step 3: Cross multiply
    412,260.60x = 618,390.90 × 329,316.60
  4. Step 4: Simplify right side
    412,260.60x = 203,646,388,658.94
  5. Step 5: Solve for x
    x = 203,646,388,658.94/412,260.60
  6. Step 6: Final answer
    x = 493,974.90

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Similar ratio
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1.5x scale

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.