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Finding the Fourth Proportional to 412,000.60, 618,000.90 and 329,056.60

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Solution

The fourth proportional to 412,000.60, 618,000.90 and 329,056.60 is: 493,584.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,000.60 : 618,000.90 = 329,056.60 : x
  2. Step 2: Convert to fraction form
    412,000.60/618,000.90 = 329,056.60/x
  3. Step 3: Cross multiply
    412,000.60x = 618,000.90 × 329,056.60
  4. Step 4: Simplify right side
    412,000.60x = 203,357,274,950.94
  5. Step 5: Solve for x
    x = 203,357,274,950.94/412,000.60
  6. Step 6: Final answer
    x = 493,584.90

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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.