Home / 821,134.56-1,231,918.80-347,837.28

Finding the Fourth Proportional to 821,134.56, 1,231,918.80 and 347,837.28

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Solution

The fourth proportional to 821,134.56, 1,231,918.80 and 347,837.28 is: 521,847.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,134.56 : 1,231,918.80 = 347,837.28 : x
  2. Step 2: Convert to fraction form
    821,134.56/1,231,918.80 = 347,837.28/x
  3. Step 3: Cross multiply
    821,134.56x = 1,231,918.80 × 347,837.28
  4. Step 4: Simplify right side
    821,134.56x = 428,507,284,572.86
  5. Step 5: Solve for x
    x = 428,507,284,572.86/821,134.56
  6. Step 6: Final answer
    x = 521,847.83

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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.