Home / 615,131.28-849,229.92-400,163.76

Finding the Fourth Proportional to 615,131.28, 849,229.92 and 400,163.76

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Solution

The fourth proportional to 615,131.28, 849,229.92 and 400,163.76 is: 552,452.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,131.28 : 849,229.92 = 400,163.76 : x
  2. Step 2: Convert to fraction form
    615,131.28/849,229.92 = 400,163.76/x
  3. Step 3: Cross multiply
    615,131.28x = 849,229.92 × 400,163.76
  4. Step 4: Simplify right side
    615,131.28x = 339,831,037,891.70
  5. Step 5: Solve for x
    x = 339,831,037,891.70/615,131.28
  6. Step 6: Final answer
    x = 552,452.86

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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.