Home / 878,361.12-1,316,945.52-279,142.56

Finding the Fourth Proportional to 878,361.12, 1,316,945.52 and 279,142.56

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Solution

The fourth proportional to 878,361.12, 1,316,945.52 and 279,142.56 is: 418,524.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,361.12 : 1,316,945.52 = 279,142.56 : x
  2. Step 2: Convert to fraction form
    878,361.12/1,316,945.52 = 279,142.56/x
  3. Step 3: Cross multiply
    878,361.12x = 1,316,945.52 × 279,142.56
  4. Step 4: Simplify right side
    878,361.12x = 367,615,543,833.33
  5. Step 5: Solve for x
    x = 367,615,543,833.33/878,361.12
  6. Step 6: Final answer
    x = 418,524.38

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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.