Home / 639,584.92-882,628.50-353,105.56

Finding the Fourth Proportional to 639,584.92, 882,628.50 and 353,105.56

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Solution

The fourth proportional to 639,584.92, 882,628.50 and 353,105.56 is: 487,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,584.92 : 882,628.50 = 353,105.56 : x
  2. Step 2: Convert to fraction form
    639,584.92/882,628.50 = 353,105.56/x
  3. Step 3: Cross multiply
    639,584.92x = 882,628.50 × 353,105.56
  4. Step 4: Simplify right side
    639,584.92x = 311,661,030,764.46
  5. Step 5: Solve for x
    x = 311,661,030,764.46/639,584.92
  6. Step 6: Final answer
    x = 487,286.40

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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.