Home / 392,699,623.70-541,929,147.10-216,493,945.76

Finding the Fourth Proportional to 392,699,623.70, 541,929,147.10 and 216,493,945.76

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Solution

The fourth proportional to 392,699,623.70, 541,929,147.10 and 216,493,945.76 is: 298,763,666.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,699,623.70 : 541,929,147.10 = 216,493,945.76 : x
  2. Step 2: Convert to fraction form
    392,699,623.70/541,929,147.10 = 216,493,945.76/x
  3. Step 3: Cross multiply
    392,699,623.70x = 541,929,147.10 × 216,493,945.76
  4. Step 4: Simplify right side
    392,699,623.70x = 117,324,379,378,030,464
  5. Step 5: Solve for x
    x = 117,324,379,378,030,464/392,699,623.70
  6. Step 6: Final answer
    x = 298,763,666.42

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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.