Home / 2,618,885.97-3,928,495.05-821,840.31

Finding the Fourth Proportional to 2,618,885.97, 3,928,495.05 and 821,840.31

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Solution

The fourth proportional to 2,618,885.97, 3,928,495.05 and 821,840.31 is: 1,232,812.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618,885.97 : 3,928,495.05 = 821,840.31 : x
  2. Step 2: Convert to fraction form
    2,618,885.97/3,928,495.05 = 821,840.31/x
  3. Step 3: Cross multiply
    2,618,885.97x = 3,928,495.05 × 821,840.31
  4. Step 4: Simplify right side
    2,618,885.97x = 3,228,595,589,725.47
  5. Step 5: Solve for x
    x = 3,228,595,589,725.47/2,618,885.97
  6. Step 6: Final answer
    x = 1,232,812.59

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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.