Home / 431,682,786.20-647,524,179.30-402,772,395.80

Finding the Fourth Proportional to 431,682,786.20, 647,524,179.30 and 402,772,395.80

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Solution

The fourth proportional to 431,682,786.20, 647,524,179.30 and 402,772,395.80 is: 604,158,593.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,682,786.20 : 647,524,179.30 = 402,772,395.80 : x
  2. Step 2: Convert to fraction form
    431,682,786.20/647,524,179.30 = 402,772,395.80/x
  3. Step 3: Cross multiply
    431,682,786.20x = 647,524,179.30 × 402,772,395.80
  4. Step 4: Simplify right side
    431,682,786.20x = 260,804,865,035,089,760
  5. Step 5: Solve for x
    x = 260,804,865,035,089,760/431,682,786.20
  6. Step 6: Final answer
    x = 604,158,593.70

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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.