Home / 639,419.70-882,399.27-352,939.89

Finding the Fourth Proportional to 639,419.70, 882,399.27 and 352,939.89

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Solution

The fourth proportional to 639,419.70, 882,399.27 and 352,939.89 is: 487,057.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,419.70 : 882,399.27 = 352,939.89 : x
  2. Step 2: Convert to fraction form
    639,419.70/882,399.27 = 352,939.89/x
  3. Step 3: Cross multiply
    639,419.70x = 882,399.27 × 352,939.89
  4. Step 4: Simplify right side
    639,419.70x = 311,433,901,289.88
  5. Step 5: Solve for x
    x = 311,433,901,289.88/639,419.70
  6. Step 6: Final answer
    x = 487,057.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.