Home / 629,855,999.40-944,783,999.10-399,990,052.20

Finding the Fourth Proportional to 629,855,999.40, 944,783,999.10 and 399,990,052.20

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Solution

The fourth proportional to 629,855,999.40, 944,783,999.10 and 399,990,052.20 is: 599,985,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,855,999.40 : 944,783,999.10 = 399,990,052.20 : x
  2. Step 2: Convert to fraction form
    629,855,999.40/944,783,999.10 = 399,990,052.20/x
  3. Step 3: Cross multiply
    629,855,999.40x = 944,783,999.10 × 399,990,052.20
  4. Step 4: Simplify right side
    629,855,999.40x = 377,904,201,117,733,760
  5. Step 5: Solve for x
    x = 377,904,201,117,733,760/629,855,999.40
  6. Step 6: Final answer
    x = 599,985,078.30

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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.