Home / 831,696.09-1,147,739.79-449,721.96

Finding the Fourth Proportional to 831,696.09, 1,147,739.79 and 449,721.96

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Solution

The fourth proportional to 831,696.09, 1,147,739.79 and 449,721.96 is: 620,615.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,696.09 : 1,147,739.79 = 449,721.96 : x
  2. Step 2: Convert to fraction form
    831,696.09/1,147,739.79 = 449,721.96/x
  3. Step 3: Cross multiply
    831,696.09x = 1,147,739.79 × 449,721.96
  4. Step 4: Simplify right side
    831,696.09x = 516,163,787,928.79
  5. Step 5: Solve for x
    x = 516,163,787,928.79/831,696.09
  6. Step 6: Final answer
    x = 620,615.86

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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.