Home / 419,904,477.40-629,856,716.10-316,440,131.80

Finding the Fourth Proportional to 419,904,477.40, 629,856,716.10 and 316,440,131.80

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Solution

The fourth proportional to 419,904,477.40, 629,856,716.10 and 316,440,131.80 is: 474,660,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,477.40 : 629,856,716.10 = 316,440,131.80 : x
  2. Step 2: Convert to fraction form
    419,904,477.40/629,856,716.10 = 316,440,131.80/x
  3. Step 3: Cross multiply
    419,904,477.40x = 629,856,716.10 × 316,440,131.80
  4. Step 4: Simplify right side
    419,904,477.40x = 199,311,942,257,799,200
  5. Step 5: Solve for x
    x = 199,311,942,257,799,200/419,904,477.40
  6. Step 6: Final answer
    x = 474,660,197.70

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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.