Home / 1,211,311.32-1,671,684.07-667,446.96

Finding the Fourth Proportional to 1,211,311.32, 1,671,684.07 and 667,446.96

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Solution

The fourth proportional to 1,211,311.32, 1,671,684.07 and 667,446.96 is: 921,117.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,311.32 : 1,671,684.07 = 667,446.96 : x
  2. Step 2: Convert to fraction form
    1,211,311.32/1,671,684.07 = 667,446.96/x
  3. Step 3: Cross multiply
    1,211,311.32x = 1,671,684.07 × 667,446.96
  4. Step 4: Simplify right side
    1,211,311.32x = 1,115,760,450,601.93
  5. Step 5: Solve for x
    x = 1,115,760,450,601.93/1,211,311.32
  6. Step 6: Final answer
    x = 921,117.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.