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Finding the Fourth Proportional to 412,516.46, 618,775.17 and 112,999.61

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Solution

The fourth proportional to 412,516.46, 618,775.17 and 112,999.61 is: 169,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,516.46 : 618,775.17 = 112,999.61 : x
  2. Step 2: Convert to fraction form
    412,516.46/618,775.17 = 112,999.61/x
  3. Step 3: Cross multiply
    412,516.46x = 618,775.17 × 112,999.61
  4. Step 4: Simplify right side
    412,516.46x = 69,921,354,434.62
  5. Step 5: Solve for x
    x = 69,921,354,434.62/412,516.46
  6. Step 6: Final answer
    x = 169,499.55

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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.