Home / 1,111,572.11-1,667,358.78-312,853.64

Finding the Fourth Proportional to 1,111,572.11, 1,667,358.78 and 312,853.64

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Solution

The fourth proportional to 1,111,572.11, 1,667,358.78 and 312,853.64 is: 469,280.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,572.11 : 1,667,358.78 = 312,853.64 : x
  2. Step 2: Convert to fraction form
    1,111,572.11/1,667,358.78 = 312,853.64/x
  3. Step 3: Cross multiply
    1,111,572.11x = 1,667,358.78 × 312,853.64
  4. Step 4: Simplify right side
    1,111,572.11x = 521,639,263,377.86
  5. Step 5: Solve for x
    x = 521,639,263,377.86/1,111,572.11
  6. Step 6: Final answer
    x = 469,280.63

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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.