Home / 2,618,861.27-3,928,457.93-821,815.65

Finding the Fourth Proportional to 2,618,861.27, 3,928,457.93 and 821,815.65

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Solution

The fourth proportional to 2,618,861.27, 3,928,457.93 and 821,815.65 is: 1,232,775.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618,861.27 : 3,928,457.93 = 821,815.65 : x
  2. Step 2: Convert to fraction form
    2,618,861.27/3,928,457.93 = 821,815.65/x
  3. Step 3: Cross multiply
    2,618,861.27x = 3,928,457.93 × 821,815.65
  4. Step 4: Simplify right side
    2,618,861.27x = 3,228,468,203,131.53
  5. Step 5: Solve for x
    x = 3,228,468,203,131.53/2,618,861.27
  6. Step 6: Final answer
    x = 1,232,775.58

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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.