Home / 1,280,212.71-1,919,896.92-427,049.25

Finding the Fourth Proportional to 1,280,212.71, 1,919,896.92 and 427,049.25

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Solution

The fourth proportional to 1,280,212.71, 1,919,896.92 and 427,049.25 is: 640,433.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,212.71 : 1,919,896.92 = 427,049.25 : x
  2. Step 2: Convert to fraction form
    1,280,212.71/1,919,896.92 = 427,049.25/x
  3. Step 3: Cross multiply
    1,280,212.71x = 1,919,896.92 × 427,049.25
  4. Step 4: Simplify right side
    1,280,212.71x = 819,890,539,763.31
  5. Step 5: Solve for x
    x = 819,890,539,763.31/1,280,212.71
  6. Step 6: Final answer
    x = 640,433.06

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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.