Home / 551,123,999.80-826,685,999.70-206,032,786.45

Finding the Fourth Proportional to 551,123,999.80, 826,685,999.70 and 206,032,786.45

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Solution

The fourth proportional to 551,123,999.80, 826,685,999.70 and 206,032,786.45 is: 309,049,179.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,123,999.80 : 826,685,999.70 = 206,032,786.45 : x
  2. Step 2: Convert to fraction form
    551,123,999.80/826,685,999.70 = 206,032,786.45/x
  3. Step 3: Cross multiply
    551,123,999.80x = 826,685,999.70 × 206,032,786.45
  4. Step 4: Simplify right side
    551,123,999.80x = 170,324,420,037,394,880
  5. Step 5: Solve for x
    x = 170,324,420,037,394,880/551,123,999.80
  6. Step 6: Final answer
    x = 309,049,179.68

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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.