Home / 855,845.72-1,283,464.61-315,986.48

Finding the Fourth Proportional to 855,845.72, 1,283,464.61 and 315,986.48

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Solution

The fourth proportional to 855,845.72, 1,283,464.61 and 315,986.48 is: 473,867.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,845.72 : 1,283,464.61 = 315,986.48 : x
  2. Step 2: Convert to fraction form
    855,845.72/1,283,464.61 = 315,986.48/x
  3. Step 3: Cross multiply
    855,845.72x = 1,283,464.61 × 315,986.48
  4. Step 4: Simplify right side
    855,845.72x = 405,557,464,318.47
  5. Step 5: Solve for x
    x = 405,557,464,318.47/855,845.72
  6. Step 6: Final answer
    x = 473,867.49

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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.