Home / 639,171.39-958,591.17-189,786.63

Finding the Fourth Proportional to 639,171.39, 958,591.17 and 189,786.63

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Solution

The fourth proportional to 639,171.39, 958,591.17 and 189,786.63 is: 284,630.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,171.39 : 958,591.17 = 189,786.63 : x
  2. Step 2: Convert to fraction form
    639,171.39/958,591.17 = 189,786.63/x
  3. Step 3: Cross multiply
    639,171.39x = 958,591.17 × 189,786.63
  4. Step 4: Simplify right side
    639,171.39x = 181,927,787,702.06
  5. Step 5: Solve for x
    x = 181,927,787,702.06/639,171.39
  6. Step 6: Final answer
    x = 284,630.68

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.