Home / 809,247.20-1,213,870.80-543,135.20

Finding the Fourth Proportional to 809,247.20, 1,213,870.80 and 543,135.20

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Solution

The fourth proportional to 809,247.20, 1,213,870.80 and 543,135.20 is: 814,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,247.20 : 1,213,870.80 = 543,135.20 : x
  2. Step 2: Convert to fraction form
    809,247.20/1,213,870.80 = 543,135.20/x
  3. Step 3: Cross multiply
    809,247.20x = 1,213,870.80 × 543,135.20
  4. Step 4: Simplify right side
    809,247.20x = 659,295,959,732.16
  5. Step 5: Solve for x
    x = 659,295,959,732.16/809,247.20
  6. Step 6: Final answer
    x = 814,702.80

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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.