Home / 5,247,482,712.70-7,874,247,377.85-1,978,278,130.30

Finding the Fourth Proportional to 5,247,482,712.70, 7,874,247,377.85 and 1,978,278,130.30

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Solution

The fourth proportional to 5,247,482,712.70, 7,874,247,377.85 and 1,978,278,130.30 is: 2,968,556,969.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247,482,712.70 : 7,874,247,377.85 = 1,978,278,130.30 : x
  2. Step 2: Convert to fraction form
    5,247,482,712.70/7,874,247,377.85 = 1,978,278,130.30/x
  3. Step 3: Cross multiply
    5,247,482,712.70x = 7,874,247,377.85 × 1,978,278,130.30
  4. Step 4: Simplify right side
    5,247,482,712.70x = 15,577,451,380,172,775,424
  5. Step 5: Solve for x
    x = 15,577,451,380,172,775,424/5,247,482,712.70
  6. Step 6: Final answer
    x = 2,968,556,969.70

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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.