Home / 419,904,557.70-629,856,836.55-389,293,556.10

Finding the Fourth Proportional to 419,904,557.70, 629,856,836.55 and 389,293,556.10

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Solution

The fourth proportional to 419,904,557.70, 629,856,836.55 and 389,293,556.10 is: 583,940,334.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,557.70 : 629,856,836.55 = 389,293,556.10 : x
  2. Step 2: Convert to fraction form
    419,904,557.70/629,856,836.55 = 389,293,556.10/x
  3. Step 3: Cross multiply
    419,904,557.70x = 629,856,836.55 × 389,293,556.10
  4. Step 4: Simplify right side
    419,904,557.70x = 245,199,207,734,445,952
  5. Step 5: Solve for x
    x = 245,199,207,734,445,952/419,904,557.70
  6. Step 6: Final answer
    x = 583,940,334.15

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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.