Home / 513,239,998.40-769,852,999.20-168,204,881.60

Finding the Fourth Proportional to 513,239,998.40, 769,852,999.20 and 168,204,881.60

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Solution

The fourth proportional to 513,239,998.40, 769,852,999.20 and 168,204,881.60 is: 252,305,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,239,998.40 : 769,852,999.20 = 168,204,881.60 : x
  2. Step 2: Convert to fraction form
    513,239,998.40/769,852,999.20 = 168,204,881.60/x
  3. Step 3: Cross multiply
    513,239,998.40x = 769,852,999.20 × 168,204,881.60
  4. Step 4: Simplify right side
    513,239,998.40x = 129,493,032,579,840,896
  5. Step 5: Solve for x
    x = 129,493,032,579,840,896/513,239,998.40
  6. Step 6: Final answer
    x = 252,305,028.80

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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.