Home / 1,380,588,618.42-1,905,157,249.31-777,745,198.56

Finding the Fourth Proportional to 1,380,588,618.42, 1,905,157,249.31 and 777,745,198.56

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Solution

The fourth proportional to 1,380,588,618.42, 1,905,157,249.31 and 777,745,198.56 is: 1,073,257,365.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,588,618.42 : 1,905,157,249.31 = 777,745,198.56 : x
  2. Step 2: Convert to fraction form
    1,380,588,618.42/1,905,157,249.31 = 777,745,198.56/x
  3. Step 3: Cross multiply
    1,380,588,618.42x = 1,905,157,249.31 × 777,745,198.56
  4. Step 4: Simplify right side
    1,380,588,618.42x = 1,481,726,903,148,740,608
  5. Step 5: Solve for x
    x = 1,481,726,903,148,740,608/1,380,588,618.42
  6. Step 6: Final answer
    x = 1,073,257,365.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.