Home / 1,188,028,767.20-1,781,334,562.80-728,296,872.80

Finding the Fourth Proportional to 1,188,028,767.20, 1,781,334,562.80 and 728,296,872.80

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Solution

The fourth proportional to 1,188,028,767.20, 1,781,334,562.80 and 728,296,872.80 is: 1,092,010,923.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,028,767.20 : 1,781,334,562.80 = 728,296,872.80 : x
  2. Step 2: Convert to fraction form
    1,188,028,767.20/1,781,334,562.80 = 728,296,872.80/x
  3. Step 3: Cross multiply
    1,188,028,767.20x = 1,781,334,562.80 × 728,296,872.80
  4. Step 4: Simplify right side
    1,188,028,767.20x = 1,297,340,391,497,795,072
  5. Step 5: Solve for x
    x = 1,297,340,391,497,795,072/1,188,028,767.20
  6. Step 6: Final answer
    x = 1,092,010,923.74

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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.