Home / 419,976,008.10-629,964,012.15-258,508,923.30

Finding the Fourth Proportional to 419,976,008.10, 629,964,012.15 and 258,508,923.30

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Solution

The fourth proportional to 419,976,008.10, 629,964,012.15 and 258,508,923.30 is: 387,763,384.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,976,008.10 : 629,964,012.15 = 258,508,923.30 : x
  2. Step 2: Convert to fraction form
    419,976,008.10/629,964,012.15 = 258,508,923.30/x
  3. Step 3: Cross multiply
    419,976,008.10x = 629,964,012.15 × 258,508,923.30
  4. Step 4: Simplify right side
    419,976,008.10x = 162,851,318,498,644,608
  5. Step 5: Solve for x
    x = 162,851,318,498,644,608/419,976,008.10
  6. Step 6: Final answer
    x = 387,763,384.95

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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.