Home / 831,660.78-1,147,692.69-449,687.46

Finding the Fourth Proportional to 831,660.78, 1,147,692.69 and 449,687.46

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Solution

The fourth proportional to 831,660.78, 1,147,692.69 and 449,687.46 is: 620,569.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,660.78 : 1,147,692.69 = 449,687.46 : x
  2. Step 2: Convert to fraction form
    831,660.78/1,147,692.69 = 449,687.46/x
  3. Step 3: Cross multiply
    831,660.78x = 1,147,692.69 × 449,687.46
  4. Step 4: Simplify right side
    831,660.78x = 516,103,010,626.67
  5. Step 5: Solve for x
    x = 516,103,010,626.67/831,660.78
  6. Step 6: Final answer
    x = 620,569.13

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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.