Home / 419,904,920.60-629,857,380.90-256,646,245.40

Finding the Fourth Proportional to 419,904,920.60, 629,857,380.90 and 256,646,245.40

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Solution

The fourth proportional to 419,904,920.60, 629,857,380.90 and 256,646,245.40 is: 384,969,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,920.60 : 629,857,380.90 = 256,646,245.40 : x
  2. Step 2: Convert to fraction form
    419,904,920.60/629,857,380.90 = 256,646,245.40/x
  3. Step 3: Cross multiply
    419,904,920.60x = 629,857,380.90 × 256,646,245.40
  4. Step 4: Simplify right side
    419,904,920.60x = 161,650,531,945,462,656
  5. Step 5: Solve for x
    x = 161,650,531,945,462,656/419,904,920.60
  6. Step 6: Final answer
    x = 384,969,368.10

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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.