Home / 1,188,454,987.40-1,782,682,481.10-728,652,234.20

Finding the Fourth Proportional to 1,188,454,987.40, 1,782,682,481.10 and 728,652,234.20

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Solution

The fourth proportional to 1,188,454,987.40, 1,782,682,481.10 and 728,652,234.20 is: 1,092,978,351.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,454,987.40 : 1,782,682,481.10 = 728,652,234.20 : x
  2. Step 2: Convert to fraction form
    1,188,454,987.40/1,782,682,481.10 = 728,652,234.20/x
  3. Step 3: Cross multiply
    1,188,454,987.40x = 1,782,682,481.10 × 728,652,234.20
  4. Step 4: Simplify right side
    1,188,454,987.40x = 1,298,955,572,722,714,368
  5. Step 5: Solve for x
    x = 1,298,955,572,722,714,368/1,188,454,987.40
  6. Step 6: Final answer
    x = 1,092,978,351.30

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1.5x scale

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.