Home / 2,618,861.96-3,928,458.95-821,816.34

Finding the Fourth Proportional to 2,618,861.96, 3,928,458.95 and 821,816.34

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Solution

The fourth proportional to 2,618,861.96, 3,928,458.95 and 821,816.34 is: 1,232,776.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618,861.96 : 3,928,458.95 = 821,816.34 : x
  2. Step 2: Convert to fraction form
    2,618,861.96/3,928,458.95 = 821,816.34/x
  3. Step 3: Cross multiply
    2,618,861.96x = 3,928,458.95 × 821,816.34
  4. Step 4: Simplify right side
    2,618,861.96x = 3,228,471,756,129.24
  5. Step 5: Solve for x
    x = 3,228,471,756,129.24/2,618,861.96
  6. Step 6: Final answer
    x = 1,232,776.61

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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.