Home / 639,540.95-882,543.38-353,054.89

Finding the Fourth Proportional to 639,540.95, 882,543.38 and 353,054.89

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Solution

The fourth proportional to 639,540.95, 882,543.38 and 353,054.89 is: 487,202.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,540.95 : 882,543.38 = 353,054.89 : x
  2. Step 2: Convert to fraction form
    639,540.95/882,543.38 = 353,054.89/x
  3. Step 3: Cross multiply
    639,540.95x = 882,543.38 × 353,054.89
  4. Step 4: Simplify right side
    639,540.95x = 311,586,249,768.14
  5. Step 5: Solve for x
    x = 311,586,249,768.14/639,540.95
  6. Step 6: Final answer
    x = 487,202.97

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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.