Home / 7,821,477.87-11,729,820.35-5,408,139.57

Finding the Fourth Proportional to 7,821,477.87, 11,729,820.35 and 5,408,139.57

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Solution

The fourth proportional to 7,821,477.87, 11,729,820.35 and 5,408,139.57 is: 8,110,552.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821,477.87 : 11,729,820.35 = 5,408,139.57 : x
  2. Step 2: Convert to fraction form
    7,821,477.87/11,729,820.35 = 5,408,139.57/x
  3. Step 3: Cross multiply
    7,821,477.87x = 11,729,820.35 × 5,408,139.57
  4. Step 4: Simplify right side
    7,821,477.87x = 63,436,505,556,785.56
  5. Step 5: Solve for x
    x = 63,436,505,556,785.56/7,821,477.87
  6. Step 6: Final answer
    x = 8,110,552.33

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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.