Home / 664,591,220.16-917,188,164.91-378,494,843.39

Finding the Fourth Proportional to 664,591,220.16, 917,188,164.91 and 378,494,843.39

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Solution

The fourth proportional to 664,591,220.16, 917,188,164.91 and 378,494,843.39 is: 522,352,658.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,591,220.16 : 917,188,164.91 = 378,494,843.39 : x
  2. Step 2: Convert to fraction form
    664,591,220.16/917,188,164.91 = 378,494,843.39/x
  3. Step 3: Cross multiply
    664,591,220.16x = 917,188,164.91 × 378,494,843.39
  4. Step 4: Simplify right side
    664,591,220.16x = 347,150,990,834,680,064
  5. Step 5: Solve for x
    x = 347,150,990,834,680,064/664,591,220.16
  6. Step 6: Final answer
    x = 522,352,658.75

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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.