Home / 639,188.38-882,054.12-352,704.70

Finding the Fourth Proportional to 639,188.38, 882,054.12 and 352,704.70

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Solution

The fourth proportional to 639,188.38, 882,054.12 and 352,704.70 is: 486,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,188.38 : 882,054.12 = 352,704.70 : x
  2. Step 2: Convert to fraction form
    639,188.38/882,054.12 = 352,704.70/x
  3. Step 3: Cross multiply
    639,188.38x = 882,054.12 × 352,704.70
  4. Step 4: Simplify right side
    639,188.38x = 311,104,633,778.36
  5. Step 5: Solve for x
    x = 311,104,633,778.36/639,188.38
  6. Step 6: Final answer
    x = 486,718.23

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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.