Home / 643,845.78-966,716.64-360,092.25

Finding the Fourth Proportional to 643,845.78, 966,716.64 and 360,092.25

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Solution

The fourth proportional to 643,845.78, 966,716.64 and 360,092.25 is: 540,668.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,845.78 : 966,716.64 = 360,092.25 : x
  2. Step 2: Convert to fraction form
    643,845.78/966,716.64 = 360,092.25/x
  3. Step 3: Cross multiply
    643,845.78x = 966,716.64 × 360,092.25
  4. Step 4: Simplify right side
    643,845.78x = 348,107,170,010.04
  5. Step 5: Solve for x
    x = 348,107,170,010.04/643,845.78
  6. Step 6: Final answer
    x = 540,668.56

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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.