Home / 1,290,983,680.88-1,781,313,823.32-769,511,435.12

Finding the Fourth Proportional to 1,290,983,680.88, 1,781,313,823.32 and 769,511,435.12

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Solution

The fourth proportional to 1,290,983,680.88, 1,781,313,823.32 and 769,511,435.12 is: 1,061,780,545.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,983,680.88 : 1,781,313,823.32 = 769,511,435.12 : x
  2. Step 2: Convert to fraction form
    1,290,983,680.88/1,781,313,823.32 = 769,511,435.12/x
  3. Step 3: Cross multiply
    1,290,983,680.88x = 1,781,313,823.32 × 769,511,435.12
  4. Step 4: Simplify right side
    1,290,983,680.88x = 1,370,741,356,582,067,200
  5. Step 5: Solve for x
    x = 1,370,741,356,582,067,200/1,290,983,680.88
  6. Step 6: Final answer
    x = 1,061,780,545.24

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.