Home / 831,865.09-1,147,974.60-449,891.87

Finding the Fourth Proportional to 831,865.09, 1,147,974.60 and 449,891.87

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Solution

The fourth proportional to 831,865.09, 1,147,974.60 and 449,891.87 is: 620,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,865.09 : 1,147,974.60 = 449,891.87 : x
  2. Step 2: Convert to fraction form
    831,865.09/1,147,974.60 = 449,891.87/x
  3. Step 3: Cross multiply
    831,865.09x = 1,147,974.60 × 449,891.87
  4. Step 4: Simplify right side
    831,865.09x = 516,464,443,590.77
  5. Step 5: Solve for x
    x = 516,464,443,590.77/831,865.09
  6. Step 6: Final answer
    x = 620,851.20

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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.