Home / 839,821,339.20-1,259,732,008.80-664,469,428.80

Finding the Fourth Proportional to 839,821,339.20, 1,259,732,008.80 and 664,469,428.80

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Solution

The fourth proportional to 839,821,339.20, 1,259,732,008.80 and 664,469,428.80 is: 996,704,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,821,339.20 : 1,259,732,008.80 = 664,469,428.80 : x
  2. Step 2: Convert to fraction form
    839,821,339.20/1,259,732,008.80 = 664,469,428.80/x
  3. Step 3: Cross multiply
    839,821,339.20x = 1,259,732,008.80 × 664,469,428.80
  4. Step 4: Simplify right side
    839,821,339.20x = 837,053,408,328,412,544
  5. Step 5: Solve for x
    x = 837,053,408,328,412,544/839,821,339.20
  6. Step 6: Final answer
    x = 996,704,143.20

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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.