Home / 7,221,117.20-9,965,121.20-3,957,921.83

Finding the Fourth Proportional to 7,221,117.20, 9,965,121.20 and 3,957,921.83

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Solution

The fourth proportional to 7,221,117.20, 9,965,121.20 and 3,957,921.83 is: 5,461,920.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221,117.20 : 9,965,121.20 = 3,957,921.83 : x
  2. Step 2: Convert to fraction form
    7,221,117.20/9,965,121.20 = 3,957,921.83/x
  3. Step 3: Cross multiply
    7,221,117.20x = 9,965,121.20 × 3,957,921.83
  4. Step 4: Simplify right side
    7,221,117.20x = 39,441,170,716,286.19
  5. Step 5: Solve for x
    x = 39,441,170,716,286.19/7,221,117.20
  6. Step 6: Final answer
    x = 5,461,920.87

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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.