Home / 1,443,171.36-1,991,787.72-831,206.46

Finding the Fourth Proportional to 1,443,171.36, 1,991,787.72 and 831,206.46

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Solution

The fourth proportional to 1,443,171.36, 1,991,787.72 and 831,206.46 is: 1,147,186.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,171.36 : 1,991,787.72 = 831,206.46 : x
  2. Step 2: Convert to fraction form
    1,443,171.36/1,991,787.72 = 831,206.46/x
  3. Step 3: Cross multiply
    1,443,171.36x = 1,991,787.72 × 831,206.46
  4. Step 4: Simplify right side
    1,443,171.36x = 1,655,586,819,812.67
  5. Step 5: Solve for x
    x = 1,655,586,819,812.67/1,443,171.36
  6. Step 6: Final answer
    x = 1,147,186.58

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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.