Home / 664,023,407.20-996,035,110.80-388,524,392.80

Finding the Fourth Proportional to 664,023,407.20, 996,035,110.80 and 388,524,392.80

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Solution

The fourth proportional to 664,023,407.20, 996,035,110.80 and 388,524,392.80 is: 582,786,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,023,407.20 : 996,035,110.80 = 388,524,392.80 : x
  2. Step 2: Convert to fraction form
    664,023,407.20/996,035,110.80 = 388,524,392.80/x
  3. Step 3: Cross multiply
    664,023,407.20x = 996,035,110.80 × 388,524,392.80
  4. Step 4: Simplify right side
    664,023,407.20x = 386,983,936,631,050,688
  5. Step 5: Solve for x
    x = 386,983,936,631,050,688/664,023,407.20
  6. Step 6: Final answer
    x = 582,786,589.20

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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.