Home / 685,102,861.86-945,279,906.70-387,745,103.92

Finding the Fourth Proportional to 685,102,861.86, 945,279,906.70 and 387,745,103.92

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Solution

The fourth proportional to 685,102,861.86, 945,279,906.70 and 387,745,103.92 is: 534,996,532.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,102,861.86 : 945,279,906.70 = 387,745,103.92 : x
  2. Step 2: Convert to fraction form
    685,102,861.86/945,279,906.70 = 387,745,103.92/x
  3. Step 3: Cross multiply
    685,102,861.86x = 945,279,906.70 × 387,745,103.92
  4. Step 4: Simplify right side
    685,102,861.86x = 366,527,655,658,132,032
  5. Step 5: Solve for x
    x = 366,527,655,658,132,032/685,102,861.86
  6. Step 6: Final answer
    x = 534,996,532.73

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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.