Home / 826,685,999.70-1,240,028,999.55-742,505,745.30

Finding the Fourth Proportional to 826,685,999.70, 1,240,028,999.55 and 742,505,745.30

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Solution

The fourth proportional to 826,685,999.70, 1,240,028,999.55 and 742,505,745.30 is: 1,113,758,617.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,685,999.70 : 1,240,028,999.55 = 742,505,745.30 : x
  2. Step 2: Convert to fraction form
    826,685,999.70/1,240,028,999.55 = 742,505,745.30/x
  3. Step 3: Cross multiply
    826,685,999.70x = 1,240,028,999.55 × 742,505,745.30
  4. Step 4: Simplify right side
    826,685,999.70x = 920,728,656,504,486,016
  5. Step 5: Solve for x
    x = 920,728,656,504,486,016/826,685,999.70
  6. Step 6: Final answer
    x = 1,113,758,617.95

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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.