Home / 639,680.97-882,736.57-353,194.91

Finding the Fourth Proportional to 639,680.97, 882,736.57 and 353,194.91

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Solution

The fourth proportional to 639,680.97, 882,736.57 and 353,194.91 is: 487,396.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,680.97 : 882,736.57 = 353,194.91 : x
  2. Step 2: Convert to fraction form
    639,680.97/882,736.57 = 353,194.91/x
  3. Step 3: Cross multiply
    639,680.97x = 882,736.57 × 353,194.91
  4. Step 4: Simplify right side
    639,680.97x = 311,778,063,394.86
  5. Step 5: Solve for x
    x = 311,778,063,394.86/639,680.97
  6. Step 6: Final answer
    x = 487,396.18

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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.