Home / 414,076.36-621,114.72-129,789.07

Finding the Fourth Proportional to 414,076.36, 621,114.72 and 129,789.07

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Solution

The fourth proportional to 414,076.36, 621,114.72 and 129,789.07 is: 194,683.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,076.36 : 621,114.72 = 129,789.07 : x
  2. Step 2: Convert to fraction form
    414,076.36/621,114.72 = 129,789.07/x
  3. Step 3: Cross multiply
    414,076.36x = 621,114.72 × 129,789.07
  4. Step 4: Simplify right side
    414,076.36x = 80,613,901,872.11
  5. Step 5: Solve for x
    x = 80,613,901,872.11/414,076.36
  6. Step 6: Final answer
    x = 194,683.66

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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.