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Finding the Fourth Proportional to 579,858,487.68, 800,204,843.88 and 319,098,103.68

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Solution

The fourth proportional to 579,858,487.68, 800,204,843.88 and 319,098,103.68 is: 440,355,455.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,858,487.68 : 800,204,843.88 = 319,098,103.68 : x
  2. Step 2: Convert to fraction form
    579,858,487.68/800,204,843.88 = 319,098,103.68/x
  3. Step 3: Cross multiply
    579,858,487.68x = 800,204,843.88 × 319,098,103.68
  4. Step 4: Simplify right side
    579,858,487.68x = 255,343,848,237,658,464
  5. Step 5: Solve for x
    x = 255,343,848,237,658,464/579,858,487.68
  6. Step 6: Final answer
    x = 440,355,455.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.