Home / 911,260.80-1,366,891.20-378,604.80

Finding the Fourth Proportional to 911,260.80, 1,366,891.20 and 378,604.80

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Solution

The fourth proportional to 911,260.80, 1,366,891.20 and 378,604.80 is: 567,907.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,260.80 : 1,366,891.20 = 378,604.80 : x
  2. Step 2: Convert to fraction form
    911,260.80/1,366,891.20 = 378,604.80/x
  3. Step 3: Cross multiply
    911,260.80x = 1,366,891.20 × 378,604.80
  4. Step 4: Simplify right side
    911,260.80x = 517,511,569,397.76
  5. Step 5: Solve for x
    x = 517,511,569,397.76/911,260.80
  6. Step 6: Final answer
    x = 567,907.20

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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.