Home / 1,280,104.90-1,920,150.42-521,943.44

Finding the Fourth Proportional to 1,280,104.90, 1,920,150.42 and 521,943.44

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Solution

The fourth proportional to 1,280,104.90, 1,920,150.42 and 521,943.44 is: 782,912.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,104.90 : 1,920,150.42 = 521,943.44 : x
  2. Step 2: Convert to fraction form
    1,280,104.90/1,920,150.42 = 521,943.44/x
  3. Step 3: Cross multiply
    1,280,104.90x = 1,920,150.42 × 521,943.44
  4. Step 4: Simplify right side
    1,280,104.90x = 1,002,209,915,532.24
  5. Step 5: Solve for x
    x = 1,002,209,915,532.24/1,280,104.90
  6. Step 6: Final answer
    x = 782,912.33

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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.