Home / 920,453.31-1,380,759.77-280,901.05

Finding the Fourth Proportional to 920,453.31, 1,380,759.77 and 280,901.05

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Solution

The fourth proportional to 920,453.31, 1,380,759.77 and 280,901.05 is: 421,375.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,453.31 : 1,380,759.77 = 280,901.05 : x
  2. Step 2: Convert to fraction form
    920,453.31/1,380,759.77 = 280,901.05/x
  3. Step 3: Cross multiply
    920,453.31x = 1,380,759.77 × 280,901.05
  4. Step 4: Simplify right side
    920,453.31x = 387,856,866,441.11
  5. Step 5: Solve for x
    x = 387,856,866,441.11/920,453.31
  6. Step 6: Final answer
    x = 421,375.93

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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.