Home / 1,280,540.60-1,920,908.10-381,912.20

Finding the Fourth Proportional to 1,280,540.60, 1,920,908.10 and 381,912.20

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Solution

The fourth proportional to 1,280,540.60, 1,920,908.10 and 381,912.20 is: 572,897.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,540.60 : 1,920,908.10 = 381,912.20 : x
  2. Step 2: Convert to fraction form
    1,280,540.60/1,920,908.10 = 381,912.20/x
  3. Step 3: Cross multiply
    1,280,540.60x = 1,920,908.10 × 381,912.20
  4. Step 4: Simplify right side
    1,280,540.60x = 733,618,238,468.82
  5. Step 5: Solve for x
    x = 733,618,238,468.82/1,280,540.60
  6. Step 6: Final answer
    x = 572,897.29

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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.