Home / 639,672.43-882,724.83-353,186.37

Finding the Fourth Proportional to 639,672.43, 882,724.83 and 353,186.37

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Solution

The fourth proportional to 639,672.43, 882,724.83 and 353,186.37 is: 487,384.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,672.43 : 882,724.83 = 353,186.37 : x
  2. Step 2: Convert to fraction form
    639,672.43/882,724.83 = 353,186.37/x
  3. Step 3: Cross multiply
    639,672.43x = 882,724.83 × 353,186.37
  4. Step 4: Simplify right side
    639,672.43x = 311,766,378,416.57
  5. Step 5: Solve for x
    x = 311,766,378,416.57/639,672.43
  6. Step 6: Final answer
    x = 487,384.42

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1.5x scale

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.