Home / 419,904,417.20-629,856,625.80-317,867,745.20

Finding the Fourth Proportional to 419,904,417.20, 629,856,625.80 and 317,867,745.20

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Solution

The fourth proportional to 419,904,417.20, 629,856,625.80 and 317,867,745.20 is: 476,801,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,417.20 : 629,856,625.80 = 317,867,745.20 : x
  2. Step 2: Convert to fraction form
    419,904,417.20/629,856,625.80 = 317,867,745.20/x
  3. Step 3: Cross multiply
    419,904,417.20x = 629,856,625.80 × 317,867,745.20
  4. Step 4: Simplify right side
    419,904,417.20x = 200,211,105,442,326,112
  5. Step 5: Solve for x
    x = 200,211,105,442,326,112/419,904,417.20
  6. Step 6: Final answer
    x = 476,801,617.80

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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.