Home / 831,716.16-1,147,766.94-469,138.90

Finding the Fourth Proportional to 831,716.16, 1,147,766.94 and 469,138.90

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Solution

The fourth proportional to 831,716.16, 1,147,766.94 and 469,138.90 is: 647,410.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,716.16 : 1,147,766.94 = 469,138.90 : x
  2. Step 2: Convert to fraction form
    831,716.16/1,147,766.94 = 469,138.90/x
  3. Step 3: Cross multiply
    831,716.16x = 1,147,766.94 × 469,138.90
  4. Step 4: Simplify right side
    831,716.16x = 538,462,119,687.97
  5. Step 5: Solve for x
    x = 538,462,119,687.97/831,716.16
  6. Step 6: Final answer
    x = 647,410.91

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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.