Home / 809,212.20-1,213,818.30-543,100.20

Finding the Fourth Proportional to 809,212.20, 1,213,818.30 and 543,100.20

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Solution

The fourth proportional to 809,212.20, 1,213,818.30 and 543,100.20 is: 814,650.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,212.20 : 1,213,818.30 = 543,100.20 : x
  2. Step 2: Convert to fraction form
    809,212.20/1,213,818.30 = 543,100.20/x
  3. Step 3: Cross multiply
    809,212.20x = 1,213,818.30 × 543,100.20
  4. Step 4: Simplify right side
    809,212.20x = 659,224,961,493.66
  5. Step 5: Solve for x
    x = 659,224,961,493.66/809,212.20
  6. Step 6: Final answer
    x = 814,650.30

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Half scale
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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.