Home / 1,188,454,967.40-1,782,682,451.10-728,652,214.20

Finding the Fourth Proportional to 1,188,454,967.40, 1,782,682,451.10 and 728,652,214.20

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Solution

The fourth proportional to 1,188,454,967.40, 1,782,682,451.10 and 728,652,214.20 is: 1,092,978,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,454,967.40 : 1,782,682,451.10 = 728,652,214.20 : x
  2. Step 2: Convert to fraction form
    1,188,454,967.40/1,782,682,451.10 = 728,652,214.20/x
  3. Step 3: Cross multiply
    1,188,454,967.40x = 1,782,682,451.10 × 728,652,214.20
  4. Step 4: Simplify right side
    1,188,454,967.40x = 1,298,955,515,209,498,368
  5. Step 5: Solve for x
    x = 1,298,955,515,209,498,368/1,188,454,967.40
  6. Step 6: Final answer
    x = 1,092,978,321.30

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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.