Home / 3,420,815.76-5,130,394.20-1,425,183.12

Finding the Fourth Proportional to 3,420,815.76, 5,130,394.20 and 1,425,183.12

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Solution

The fourth proportional to 3,420,815.76, 5,130,394.20 and 1,425,183.12 is: 2,137,429.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420,815.76 : 5,130,394.20 = 1,425,183.12 : x
  2. Step 2: Convert to fraction form
    3,420,815.76/5,130,394.20 = 1,425,183.12/x
  3. Step 3: Cross multiply
    3,420,815.76x = 5,130,394.20 × 1,425,183.12
  4. Step 4: Simplify right side
    3,420,815.76x = 7,311,751,212,785.91
  5. Step 5: Solve for x
    x = 7,311,751,212,785.91/3,420,815.76
  6. Step 6: Final answer
    x = 2,137,429.12

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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.