Home / 915,857.57-1,372,816.75-308,067.28

Finding the Fourth Proportional to 915,857.57, 1,372,816.75 and 308,067.28

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Solution

The fourth proportional to 915,857.57, 1,372,816.75 and 308,067.28 is: 461,774.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,857.57 : 1,372,816.75 = 308,067.28 : x
  2. Step 2: Convert to fraction form
    915,857.57/1,372,816.75 = 308,067.28/x
  3. Step 3: Cross multiply
    915,857.57x = 1,372,816.75 × 308,067.28
  4. Step 4: Simplify right side
    915,857.57x = 422,919,922,110.94
  5. Step 5: Solve for x
    x = 422,919,922,110.94/915,857.57
  6. Step 6: Final answer
    x = 461,774.77

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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.