Home / 320,520,043.20-480,780,064.80-199,587,691.20

Finding the Fourth Proportional to 320,520,043.20, 480,780,064.80 and 199,587,691.20

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Solution

The fourth proportional to 320,520,043.20, 480,780,064.80 and 199,587,691.20 is: 299,381,536.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,520,043.20 : 480,780,064.80 = 199,587,691.20 : x
  2. Step 2: Convert to fraction form
    320,520,043.20/480,780,064.80 = 199,587,691.20/x
  3. Step 3: Cross multiply
    320,520,043.20x = 480,780,064.80 × 199,587,691.20
  4. Step 4: Simplify right side
    320,520,043.20x = 95,957,783,108,418,384
  5. Step 5: Solve for x
    x = 95,957,783,108,418,384/320,520,043.20
  6. Step 6: Final answer
    x = 299,381,536.80

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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.