Home / 448,080,490.80-672,120,736.20-394,332,778.80

Finding the Fourth Proportional to 448,080,490.80, 672,120,736.20 and 394,332,778.80

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Solution

The fourth proportional to 448,080,490.80, 672,120,736.20 and 394,332,778.80 is: 591,499,168.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,080,490.80 : 672,120,736.20 = 394,332,778.80 : x
  2. Step 2: Convert to fraction form
    448,080,490.80/672,120,736.20 = 394,332,778.80/x
  3. Step 3: Cross multiply
    448,080,490.80x = 672,120,736.20 × 394,332,778.80
  4. Step 4: Simplify right side
    448,080,490.80x = 265,039,237,594,847,776
  5. Step 5: Solve for x
    x = 265,039,237,594,847,776/448,080,490.80
  6. Step 6: Final answer
    x = 591,499,168.20

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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.