Home / 419,904,048.40-629,856,072.60-290,475,638.80

Finding the Fourth Proportional to 419,904,048.40, 629,856,072.60 and 290,475,638.80

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Solution

The fourth proportional to 419,904,048.40, 629,856,072.60 and 290,475,638.80 is: 435,713,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,048.40 : 629,856,072.60 = 290,475,638.80 : x
  2. Step 2: Convert to fraction form
    419,904,048.40/629,856,072.60 = 290,475,638.80/x
  3. Step 3: Cross multiply
    419,904,048.40x = 629,856,072.60 × 290,475,638.80
  4. Step 4: Simplify right side
    419,904,048.40x = 182,957,845,040,544,192
  5. Step 5: Solve for x
    x = 182,957,845,040,544,192/419,904,048.40
  6. Step 6: Final answer
    x = 435,713,458.20

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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.