Home / 811,291.20-1,216,936.80-362,011.20

Finding the Fourth Proportional to 811,291.20, 1,216,936.80 and 362,011.20

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Solution

The fourth proportional to 811,291.20, 1,216,936.80 and 362,011.20 is: 543,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,291.20 : 1,216,936.80 = 362,011.20 : x
  2. Step 2: Convert to fraction form
    811,291.20/1,216,936.80 = 362,011.20/x
  3. Step 3: Cross multiply
    811,291.20x = 1,216,936.80 × 362,011.20
  4. Step 4: Simplify right side
    811,291.20x = 440,544,751,292.16
  5. Step 5: Solve for x
    x = 440,544,751,292.16/811,291.20
  6. Step 6: Final answer
    x = 543,016.80

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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.