Home / 828,995,068.10-1,244,288,864.55-420,512,456.90

Finding the Fourth Proportional to 828,995,068.10, 1,244,288,864.55 and 420,512,456.90

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Solution

The fourth proportional to 828,995,068.10, 1,244,288,864.55 and 420,512,456.90 is: 631,172,593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,995,068.10 : 1,244,288,864.55 = 420,512,456.90 : x
  2. Step 2: Convert to fraction form
    828,995,068.10/1,244,288,864.55 = 420,512,456.90/x
  3. Step 3: Cross multiply
    828,995,068.10x = 1,244,288,864.55 × 420,512,456.90
  4. Step 4: Simplify right side
    828,995,068.10x = 523,238,967,525,231,744
  5. Step 5: Solve for x
    x = 523,238,967,525,231,744/828,995,068.10
  6. Step 6: Final answer
    x = 631,172,593.98

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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.