Home / 410,629.57-615,945.87-126,318.15

Finding the Fourth Proportional to 410,629.57, 615,945.87 and 126,318.15

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Solution

The fourth proportional to 410,629.57, 615,945.87 and 126,318.15 is: 189,477.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,629.57 : 615,945.87 = 126,318.15 : x
  2. Step 2: Convert to fraction form
    410,629.57/615,945.87 = 126,318.15/x
  3. Step 3: Cross multiply
    410,629.57x = 615,945.87 × 126,318.15
  4. Step 4: Simplify right side
    410,629.57x = 77,805,141,791.76
  5. Step 5: Solve for x
    x = 77,805,141,791.76/410,629.57
  6. Step 6: Final answer
    x = 189,477.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.