Home / 1,280,104.92-1,920,150.40-521,943.44

Finding the Fourth Proportional to 1,280,104.92, 1,920,150.40 and 521,943.44

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Solution

The fourth proportional to 1,280,104.92, 1,920,150.40 and 521,943.44 is: 782,912.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,104.92 : 1,920,150.40 = 521,943.44 : x
  2. Step 2: Convert to fraction form
    1,280,104.92/1,920,150.40 = 521,943.44/x
  3. Step 3: Cross multiply
    1,280,104.92x = 1,920,150.40 × 521,943.44
  4. Step 4: Simplify right side
    1,280,104.92x = 1,002,209,905,093.38
  5. Step 5: Solve for x
    x = 1,002,209,905,093.38/1,280,104.92
  6. Step 6: Final answer
    x = 782,912.31

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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.