Home / 831,713.11-1,147,765.33-449,739.89

Finding the Fourth Proportional to 831,713.11, 1,147,765.33 and 449,739.89

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Solution

The fourth proportional to 831,713.11, 1,147,765.33 and 449,739.89 is: 620,641.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,713.11 : 1,147,765.33 = 449,739.89 : x
  2. Step 2: Convert to fraction form
    831,713.11/1,147,765.33 = 449,739.89/x
  3. Step 3: Cross multiply
    831,713.11x = 1,147,765.33 × 449,739.89
  4. Step 4: Simplify right side
    831,713.11x = 516,195,851,011.31
  5. Step 5: Solve for x
    x = 516,195,851,011.31/831,713.11
  6. Step 6: Final answer
    x = 620,641.72

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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.