Home / 419,904,420.40-629,856,630.60-266,723,441.20

Finding the Fourth Proportional to 419,904,420.40, 629,856,630.60 and 266,723,441.20

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Solution

The fourth proportional to 419,904,420.40, 629,856,630.60 and 266,723,441.20 is: 400,085,161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,420.40 : 629,856,630.60 = 266,723,441.20 : x
  2. Step 2: Convert to fraction form
    419,904,420.40/629,856,630.60 = 266,723,441.20/x
  3. Step 3: Cross multiply
    419,904,420.40x = 629,856,630.60 × 266,723,441.20
  4. Step 4: Simplify right side
    419,904,420.40x = 167,997,527,976,269,216
  5. Step 5: Solve for x
    x = 167,997,527,976,269,216/419,904,420.40
  6. Step 6: Final answer
    x = 400,085,161.80

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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.