Home / 490,741,420.80-734,836,672.80-387,854,443.20

Finding the Fourth Proportional to 490,741,420.80, 734,836,672.80 and 387,854,443.20

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Solution

The fourth proportional to 490,741,420.80, 734,836,672.80 and 387,854,443.20 is: 580,773,614.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,741,420.80 : 734,836,672.80 = 387,854,443.20 : x
  2. Step 2: Convert to fraction form
    490,741,420.80/734,836,672.80 = 387,854,443.20/x
  3. Step 3: Cross multiply
    490,741,420.80x = 734,836,672.80 × 387,854,443.20
  4. Step 4: Simplify right side
    490,741,420.80x = 285,009,668,571,784,544
  5. Step 5: Solve for x
    x = 285,009,668,571,784,544/490,741,420.80
  6. Step 6: Final answer
    x = 580,773,614.15

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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.