Home / 1,211,815.92-1,672,230.48-667,956

Finding the Fourth Proportional to 1,211,815.92, 1,672,230.48 and 667,956

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Solution

The fourth proportional to 1,211,815.92, 1,672,230.48 and 667,956 is: 921,737.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,815.92 : 1,672,230.48 = 667,956 : x
  2. Step 2: Convert to fraction form
    1,211,815.92/1,672,230.48 = 667,956/x
  3. Step 3: Cross multiply
    1,211,815.92x = 1,672,230.48 × 667,956
  4. Step 4: Simplify right side
    1,211,815.92x = 1,116,976,382,498.88
  5. Step 5: Solve for x
    x = 1,116,976,382,498.88/1,211,815.92
  6. Step 6: Final answer
    x = 921,737.67

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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.