Home / 828,995,074.60-1,244,288,874.30-420,512,463.40

Finding the Fourth Proportional to 828,995,074.60, 1,244,288,874.30 and 420,512,463.40

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Solution

The fourth proportional to 828,995,074.60, 1,244,288,874.30 and 420,512,463.40 is: 631,172,603.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,995,074.60 : 1,244,288,874.30 = 420,512,463.40 : x
  2. Step 2: Convert to fraction form
    828,995,074.60/1,244,288,874.30 = 420,512,463.40/x
  3. Step 3: Cross multiply
    828,995,074.60x = 1,244,288,874.30 × 420,512,463.40
  4. Step 4: Simplify right side
    828,995,074.60x = 523,238,979,713,105,920
  5. Step 5: Solve for x
    x = 523,238,979,713,105,920/828,995,074.60
  6. Step 6: Final answer
    x = 631,172,603.73

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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.