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Finding the Fourth Proportional to 551,353,187.40, 827,029,781.10 and 347,279,843.40

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Solution

The fourth proportional to 551,353,187.40, 827,029,781.10 and 347,279,843.40 is: 520,919,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,353,187.40 : 827,029,781.10 = 347,279,843.40 : x
  2. Step 2: Convert to fraction form
    551,353,187.40/827,029,781.10 = 347,279,843.40/x
  3. Step 3: Cross multiply
    551,353,187.40x = 827,029,781.10 × 347,279,843.40
  4. Step 4: Simplify right side
    551,353,187.40x = 287,210,772,867,544,256
  5. Step 5: Solve for x
    x = 287,210,772,867,544,256/551,353,187.40
  6. Step 6: Final answer
    x = 520,919,765.10

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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.