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Finding the Fourth Proportional to 893,661.56, 1,340,480.66 and 219,748.70

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Solution

The fourth proportional to 893,661.56, 1,340,480.66 and 219,748.70 is: 329,620.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,661.56 : 1,340,480.66 = 219,748.70 : x
  2. Step 2: Convert to fraction form
    893,661.56/1,340,480.66 = 219,748.70/x
  3. Step 3: Cross multiply
    893,661.56x = 1,340,480.66 × 219,748.70
  4. Step 4: Simplify right side
    893,661.56x = 294,568,882,410.14
  5. Step 5: Solve for x
    x = 294,568,882,410.14/893,661.56
  6. Step 6: Final answer
    x = 329,620.18

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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.