Home / 831,057.36-1,245,601.56-381,399.28

Finding the Fourth Proportional to 831,057.36, 1,245,601.56 and 381,399.28

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Solution

The fourth proportional to 831,057.36, 1,245,601.56 and 381,399.28 is: 571,647.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,057.36 : 1,245,601.56 = 381,399.28 : x
  2. Step 2: Convert to fraction form
    831,057.36/1,245,601.56 = 381,399.28/x
  3. Step 3: Cross multiply
    831,057.36x = 1,245,601.56 × 381,399.28
  4. Step 4: Simplify right side
    831,057.36x = 475,071,538,150.88
  5. Step 5: Solve for x
    x = 475,071,538,150.88/831,057.36
  6. Step 6: Final answer
    x = 571,647.11

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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.