Home / 831,357.16-1,147,272.37-449,383.94

Finding the Fourth Proportional to 831,357.16, 1,147,272.37 and 449,383.94

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Solution

The fourth proportional to 831,357.16, 1,147,272.37 and 449,383.94 is: 620,149.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,357.16 : 1,147,272.37 = 449,383.94 : x
  2. Step 2: Convert to fraction form
    831,357.16/1,147,272.37 = 449,383.94/x
  3. Step 3: Cross multiply
    831,357.16x = 1,147,272.37 × 449,383.94
  4. Step 4: Simplify right side
    831,357.16x = 515,565,781,080.68
  5. Step 5: Solve for x
    x = 515,565,781,080.68/831,357.16
  6. Step 6: Final answer
    x = 620,149.56

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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.