Home / 521,469,715.72-782,204,853.96-193,902,665.55

Finding the Fourth Proportional to 521,469,715.72, 782,204,853.96 and 193,902,665.55

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Solution

The fourth proportional to 521,469,715.72, 782,204,853.96 and 193,902,665.55 is: 290,854,102.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,469,715.72 : 782,204,853.96 = 193,902,665.55 : x
  2. Step 2: Convert to fraction form
    521,469,715.72/782,204,853.96 = 193,902,665.55/x
  3. Step 3: Cross multiply
    521,469,715.72x = 782,204,853.96 × 193,902,665.55
  4. Step 4: Simplify right side
    521,469,715.72x = 151,671,606,185,081,440
  5. Step 5: Solve for x
    x = 151,671,606,185,081,440/521,469,715.72
  6. Step 6: Final answer
    x = 290,854,102.57

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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.