Home / 1,443,174.36-1,991,791.86-831,209.46

Finding the Fourth Proportional to 1,443,174.36, 1,991,791.86 and 831,209.46

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Solution

The fourth proportional to 1,443,174.36, 1,991,791.86 and 831,209.46 is: 1,147,190.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,174.36 : 1,991,791.86 = 831,209.46 : x
  2. Step 2: Convert to fraction form
    1,443,174.36/1,991,791.86 = 831,209.46/x
  3. Step 3: Cross multiply
    1,443,174.36x = 1,991,791.86 × 831,209.46
  4. Step 4: Simplify right side
    1,443,174.36x = 1,655,596,236,383.00
  5. Step 5: Solve for x
    x = 1,655,596,236,383.00/1,443,174.36
  6. Step 6: Final answer
    x = 1,147,190.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.