Home / 389,986-584,905.02-190,105.36

Finding the Fourth Proportional to 389,986, 584,905.02 and 190,105.36

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Solution

The fourth proportional to 389,986, 584,905.02 and 190,105.36 is: 285,121.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,986 : 584,905.02 = 190,105.36 : x
  2. Step 2: Convert to fraction form
    389,986/584,905.02 = 190,105.36/x
  3. Step 3: Cross multiply
    389,986x = 584,905.02 × 190,105.36
  4. Step 4: Simplify right side
    389,986x = 111,193,579,392.91
  5. Step 5: Solve for x
    x = 111,193,579,392.91/389,986
  6. Step 6: Final answer
    x = 285,121.98

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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.