Home / 1,111,387.77-1,667,081.61-512,171.64

Finding the Fourth Proportional to 1,111,387.77, 1,667,081.61 and 512,171.64

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Solution

The fourth proportional to 1,111,387.77, 1,667,081.61 and 512,171.64 is: 768,257.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,387.77 : 1,667,081.61 = 512,171.64 : x
  2. Step 2: Convert to fraction form
    1,111,387.77/1,667,081.61 = 512,171.64/x
  3. Step 3: Cross multiply
    1,111,387.77x = 1,667,081.61 × 512,171.64
  4. Step 4: Simplify right side
    1,111,387.77x = 853,831,922,207.54
  5. Step 5: Solve for x
    x = 853,831,922,207.54/1,111,387.77
  6. Step 6: Final answer
    x = 768,257.44

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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.