Home / 2,618,868.18-3,928,468.32-821,822.56

Finding the Fourth Proportional to 2,618,868.18, 3,928,468.32 and 821,822.56

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Solution

The fourth proportional to 2,618,868.18, 3,928,468.32 and 821,822.56 is: 1,232,785.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618,868.18 : 3,928,468.32 = 821,822.56 : x
  2. Step 2: Convert to fraction form
    2,618,868.18/3,928,468.32 = 821,822.56/x
  3. Step 3: Cross multiply
    2,618,868.18x = 3,928,468.32 × 821,822.56
  4. Step 4: Simplify right side
    2,618,868.18x = 3,228,503,891,621.30
  5. Step 5: Solve for x
    x = 3,228,503,891,621.30/2,618,868.18
  6. Step 6: Final answer
    x = 1,232,785.95

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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.