Home / 639,540.45-882,542.69-353,054.39

Finding the Fourth Proportional to 639,540.45, 882,542.69 and 353,054.39

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Solution

The fourth proportional to 639,540.45, 882,542.69 and 353,054.39 is: 487,202.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,540.45 : 882,542.69 = 353,054.39 : x
  2. Step 2: Convert to fraction form
    639,540.45/882,542.69 = 353,054.39/x
  3. Step 3: Cross multiply
    639,540.45x = 882,542.69 × 353,054.39
  4. Step 4: Simplify right side
    639,540.45x = 311,585,564,888.92
  5. Step 5: Solve for x
    x = 311,585,564,888.92/639,540.45
  6. Step 6: Final answer
    x = 487,202.28

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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.