Home / 486,415,912.20-729,317,338.38-412,665,460.80

Finding the Fourth Proportional to 486,415,912.20, 729,317,338.38 and 412,665,460.80

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Solution

The fourth proportional to 486,415,912.20, 729,317,338.38 and 412,665,460.80 is: 618,738,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,415,912.20 : 729,317,338.38 = 412,665,460.80 : x
  2. Step 2: Convert to fraction form
    486,415,912.20/729,317,338.38 = 412,665,460.80/x
  3. Step 3: Cross multiply
    486,415,912.20x = 729,317,338.38 × 412,665,460.80
  4. Step 4: Simplify right side
    486,415,912.20x = 300,964,075,512,012,224
  5. Step 5: Solve for x
    x = 300,964,075,512,012,224/486,415,912.20
  6. Step 6: Final answer
    x = 618,738,137.39

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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.