Home / 312,665,851.78-469,002,769.08-82,632,949

Finding the Fourth Proportional to 312,665,851.78, 469,002,769.08 and 82,632,949

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Solution

The fourth proportional to 312,665,851.78, 469,002,769.08 and 82,632,949 is: 123,950,478.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,665,851.78 : 469,002,769.08 = 82,632,949 : x
  2. Step 2: Convert to fraction form
    312,665,851.78/469,002,769.08 = 82,632,949/x
  3. Step 3: Cross multiply
    312,665,851.78x = 469,002,769.08 × 82,632,949
  4. Step 4: Simplify right side
    312,665,851.78x = 38,755,081,898,246,416
  5. Step 5: Solve for x
    x = 38,755,081,898,246,416/312,665,851.78
  6. Step 6: Final answer
    x = 123,950,478.37

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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.