Home / 639,067,525.20-958,601,287.80-409,485,013.20

Finding the Fourth Proportional to 639,067,525.20, 958,601,287.80 and 409,485,013.20

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Solution

The fourth proportional to 639,067,525.20, 958,601,287.80 and 409,485,013.20 is: 614,227,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,067,525.20 : 958,601,287.80 = 409,485,013.20 : x
  2. Step 2: Convert to fraction form
    639,067,525.20/958,601,287.80 = 409,485,013.20/x
  3. Step 3: Cross multiply
    639,067,525.20x = 958,601,287.80 × 409,485,013.20
  4. Step 4: Simplify right side
    639,067,525.20x = 392,532,860,988,320,000
  5. Step 5: Solve for x
    x = 392,532,860,988,320,000/639,067,525.20
  6. Step 6: Final answer
    x = 614,227,519.80

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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.