Home / 809,205.20-1,213,807.80-276,646.40

Finding the Fourth Proportional to 809,205.20, 1,213,807.80 and 276,646.40

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Solution

The fourth proportional to 809,205.20, 1,213,807.80 and 276,646.40 is: 414,969.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,205.20 : 1,213,807.80 = 276,646.40 : x
  2. Step 2: Convert to fraction form
    809,205.20/1,213,807.80 = 276,646.40/x
  3. Step 3: Cross multiply
    809,205.20x = 1,213,807.80 × 276,646.40
  4. Step 4: Simplify right side
    809,205.20x = 335,795,558,161.92
  5. Step 5: Solve for x
    x = 335,795,558,161.92/809,205.20
  6. Step 6: Final answer
    x = 414,969.60

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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.