Home / 677,857,998.80-1,016,786,998.20-193,120,821.20

Finding the Fourth Proportional to 677,857,998.80, 1,016,786,998.20 and 193,120,821.20

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Solution

The fourth proportional to 677,857,998.80, 1,016,786,998.20 and 193,120,821.20 is: 289,681,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,857,998.80 : 1,016,786,998.20 = 193,120,821.20 : x
  2. Step 2: Convert to fraction form
    677,857,998.80/1,016,786,998.20 = 193,120,821.20/x
  3. Step 3: Cross multiply
    677,857,998.80x = 1,016,786,998.20 × 193,120,821.20
  4. Step 4: Simplify right side
    677,857,998.80x = 196,362,740,077,866,912
  5. Step 5: Solve for x
    x = 196,362,740,077,866,912/677,857,998.80
  6. Step 6: Final answer
    x = 289,681,231.80

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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.