Home / 2,618,859.71-3,928,455.60-821,814.11

Finding the Fourth Proportional to 2,618,859.71, 3,928,455.60 and 821,814.11

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Solution

The fourth proportional to 2,618,859.71, 3,928,455.60 and 821,814.11 is: 1,232,773.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618,859.71 : 3,928,455.60 = 821,814.11 : x
  2. Step 2: Convert to fraction form
    2,618,859.71/3,928,455.60 = 821,814.11/x
  3. Step 3: Cross multiply
    2,618,859.71x = 3,928,455.60 × 821,814.11
  4. Step 4: Simplify right side
    2,618,859.71x = 3,228,460,234,596.14
  5. Step 5: Solve for x
    x = 3,228,460,234,596.14/2,618,859.71
  6. Step 6: Final answer
    x = 1,232,773.27

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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.