Home / 911,707.34-1,367,578.61-280,620.50

Finding the Fourth Proportional to 911,707.34, 1,367,578.61 and 280,620.50

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Solution

The fourth proportional to 911,707.34, 1,367,578.61 and 280,620.50 is: 420,936.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,707.34 : 1,367,578.61 = 280,620.50 : x
  2. Step 2: Convert to fraction form
    911,707.34/1,367,578.61 = 280,620.50/x
  3. Step 3: Cross multiply
    911,707.34x = 1,367,578.61 × 280,620.50
  4. Step 4: Simplify right side
    911,707.34x = 383,770,591,924.40
  5. Step 5: Solve for x
    x = 383,770,591,924.40/911,707.34
  6. Step 6: Final answer
    x = 420,936.17

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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.