Home / 639,067,520.20-958,601,280.30-409,485,008.20

Finding the Fourth Proportional to 639,067,520.20, 958,601,280.30 and 409,485,008.20

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Solution

The fourth proportional to 639,067,520.20, 958,601,280.30 and 409,485,008.20 is: 614,227,512.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,067,520.20 : 958,601,280.30 = 409,485,008.20 : x
  2. Step 2: Convert to fraction form
    639,067,520.20/958,601,280.30 = 409,485,008.20/x
  3. Step 3: Cross multiply
    639,067,520.20x = 958,601,280.30 × 409,485,008.20
  4. Step 4: Simplify right side
    639,067,520.20x = 392,532,853,124,175,936
  5. Step 5: Solve for x
    x = 392,532,853,124,175,936/639,067,520.20
  6. Step 6: Final answer
    x = 614,227,512.30

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Similar ratio
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1.5x scale

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.