Home / 409,043.21-613,588.39-124,743.47

Finding the Fourth Proportional to 409,043.21, 613,588.39 and 124,743.47

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Solution

The fourth proportional to 409,043.21, 613,588.39 and 124,743.47 is: 187,122.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,043.21 : 613,588.39 = 124,743.47 : x
  2. Step 2: Convert to fraction form
    409,043.21/613,588.39 = 124,743.47/x
  3. Step 3: Cross multiply
    409,043.21x = 613,588.39 × 124,743.47
  4. Step 4: Simplify right side
    409,043.21x = 76,541,141,540.51
  5. Step 5: Solve for x
    x = 76,541,141,540.51/409,043.21
  6. Step 6: Final answer
    x = 187,122.39

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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.