Home / 660,694,281.70-911,782,081.24-378,491,263.64

Finding the Fourth Proportional to 660,694,281.70, 911,782,081.24 and 378,491,263.64

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Solution

The fourth proportional to 660,694,281.70, 911,782,081.24 and 378,491,263.64 is: 522,331,676.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,694,281.70 : 911,782,081.24 = 378,491,263.64 : x
  2. Step 2: Convert to fraction form
    660,694,281.70/911,782,081.24 = 378,491,263.64/x
  3. Step 3: Cross multiply
    660,694,281.70x = 911,782,081.24 × 378,491,263.64
  4. Step 4: Simplify right side
    660,694,281.70x = 345,101,552,092,836,736
  5. Step 5: Solve for x
    x = 345,101,552,092,836,736/660,694,281.70
  6. Step 6: Final answer
    x = 522,331,676.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.