Home / 398,546.49-597,936.23-128,668.33

Finding the Fourth Proportional to 398,546.49, 597,936.23 and 128,668.33

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Solution

The fourth proportional to 398,546.49, 597,936.23 and 128,668.33 is: 193,040.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,546.49 : 597,936.23 = 128,668.33 : x
  2. Step 2: Convert to fraction form
    398,546.49/597,936.23 = 128,668.33/x
  3. Step 3: Cross multiply
    398,546.49x = 597,936.23 × 128,668.33
  4. Step 4: Simplify right side
    398,546.49x = 76,935,456,747.18
  5. Step 5: Solve for x
    x = 76,935,456,747.18/398,546.49
  6. Step 6: Final answer
    x = 193,040.10

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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.