Home / 813,750,963.12-1,220,511,465.72-260,981,552.88

Finding the Fourth Proportional to 813,750,963.12, 1,220,511,465.72 and 260,981,552.88

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Solution

The fourth proportional to 813,750,963.12, 1,220,511,465.72 and 260,981,552.88 is: 391,435,453.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,750,963.12 : 1,220,511,465.72 = 260,981,552.88 : x
  2. Step 2: Convert to fraction form
    813,750,963.12/1,220,511,465.72 = 260,981,552.88/x
  3. Step 3: Cross multiply
    813,750,963.12x = 1,220,511,465.72 × 260,981,552.88
  4. Step 4: Simplify right side
    813,750,963.12x = 318,530,977,631,450,496
  5. Step 5: Solve for x
    x = 318,530,977,631,450,496/813,750,963.12
  6. Step 6: Final answer
    x = 391,435,453.93

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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.