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Finding the Fourth Proportional to 412,516.60, 618,775.38 and 112,999.76

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Solution

The fourth proportional to 412,516.60, 618,775.38 and 112,999.76 is: 169,499.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,516.60 : 618,775.38 = 112,999.76 : x
  2. Step 2: Convert to fraction form
    412,516.60/618,775.38 = 112,999.76/x
  3. Step 3: Cross multiply
    412,516.60x = 618,775.38 × 112,999.76
  4. Step 4: Simplify right side
    412,516.60x = 69,921,469,433.91
  5. Step 5: Solve for x
    x = 69,921,469,433.91/412,516.60
  6. Step 6: Final answer
    x = 169,499.77

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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.