Home / 828,995,073.60-1,244,288,872.80-420,512,462.40

Finding the Fourth Proportional to 828,995,073.60, 1,244,288,872.80 and 420,512,462.40

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Solution

The fourth proportional to 828,995,073.60, 1,244,288,872.80 and 420,512,462.40 is: 631,172,602.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,995,073.60 : 1,244,288,872.80 = 420,512,462.40 : x
  2. Step 2: Convert to fraction form
    828,995,073.60/1,244,288,872.80 = 420,512,462.40/x
  3. Step 3: Cross multiply
    828,995,073.60x = 1,244,288,872.80 × 420,512,462.40
  4. Step 4: Simplify right side
    828,995,073.60x = 523,238,977,838,048,320
  5. Step 5: Solve for x
    x = 523,238,977,838,048,320/828,995,073.60
  6. Step 6: Final answer
    x = 631,172,602.23

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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.