Home / 419,904,482.40-629,856,723.60-316,440,136.80

Finding the Fourth Proportional to 419,904,482.40, 629,856,723.60 and 316,440,136.80

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Solution

The fourth proportional to 419,904,482.40, 629,856,723.60 and 316,440,136.80 is: 474,660,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,482.40 : 629,856,723.60 = 316,440,136.80 : x
  2. Step 2: Convert to fraction form
    419,904,482.40/629,856,723.60 = 316,440,136.80/x
  3. Step 3: Cross multiply
    419,904,482.40x = 629,856,723.60 × 316,440,136.80
  4. Step 4: Simplify right side
    419,904,482.40x = 199,311,947,780,383,808
  5. Step 5: Solve for x
    x = 199,311,947,780,383,808/419,904,482.40
  6. Step 6: Final answer
    x = 474,660,205.20

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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.