Home / 855,170.80-1,281,719.40-381,353.20

Finding the Fourth Proportional to 855,170.80, 1,281,719.40 and 381,353.20

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Solution

The fourth proportional to 855,170.80, 1,281,719.40 and 381,353.20 is: 571,567.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,170.80 : 1,281,719.40 = 381,353.20 : x
  2. Step 2: Convert to fraction form
    855,170.80/1,281,719.40 = 381,353.20/x
  3. Step 3: Cross multiply
    855,170.80x = 1,281,719.40 × 381,353.20
  4. Step 4: Simplify right side
    855,170.80x = 488,787,794,692.08
  5. Step 5: Solve for x
    x = 488,787,794,692.08/855,170.80
  6. Step 6: Final answer
    x = 571,567.45

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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.