Home / 811,183.36-1,216,682.09-212,202.33

Finding the Fourth Proportional to 811,183.36, 1,216,682.09 and 212,202.33

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Solution

The fourth proportional to 811,183.36, 1,216,682.09 and 212,202.33 is: 318,279.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,183.36 : 1,216,682.09 = 212,202.33 : x
  2. Step 2: Convert to fraction form
    811,183.36/1,216,682.09 = 212,202.33/x
  3. Step 3: Cross multiply
    811,183.36x = 1,216,682.09 × 212,202.33
  4. Step 4: Simplify right side
    811,183.36x = 258,182,774,102.02
  5. Step 5: Solve for x
    x = 258,182,774,102.02/811,183.36
  6. Step 6: Final answer
    x = 318,279.18

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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.