Home / 521,520,790,003.70-782,281,185,005.55-447,136,056,115.70

Finding the Fourth Proportional to 521,520,790,003.70, 782,281,185,005.55 and 447,136,056,115.70

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Solution

The fourth proportional to 521,520,790,003.70, 782,281,185,005.55 and 447,136,056,115.70 is: 670,704,084,173.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,790,003.70 : 782,281,185,005.55 = 447,136,056,115.70 : x
  2. Step 2: Convert to fraction form
    521,520,790,003.70/782,281,185,005.55 = 447,136,056,115.70/x
  3. Step 3: Cross multiply
    521,520,790,003.70x = 782,281,185,005.55 × 447,136,056,115.70
  4. Step 4: Simplify right side
    521,520,790,003.70x = 349,786,123,836,897,923,956,736
  5. Step 5: Solve for x
    x = 349,786,123,836,897,923,956,736/521,520,790,003.70
  6. Step 6: Final answer
    x = 670,704,084,173.55

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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.