Home / 1,386,662.89-2,080,217.84-427,118.05

Finding the Fourth Proportional to 1,386,662.89, 2,080,217.84 and 427,118.05

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Solution

The fourth proportional to 1,386,662.89, 2,080,217.84 and 427,118.05 is: 640,745.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,662.89 : 2,080,217.84 = 427,118.05 : x
  2. Step 2: Convert to fraction form
    1,386,662.89/2,080,217.84 = 427,118.05/x
  3. Step 3: Cross multiply
    1,386,662.89x = 2,080,217.84 × 427,118.05
  4. Step 4: Simplify right side
    1,386,662.89x = 888,498,577,961.35
  5. Step 5: Solve for x
    x = 888,498,577,961.35/1,386,662.89
  6. Step 6: Final answer
    x = 640,745.91

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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.