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Finding the Fourth Proportional to 631,928.94, 872,067.74 and 359,992.80

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Solution

The fourth proportional to 631,928.94, 872,067.74 and 359,992.80 is: 496,793.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,928.94 : 872,067.74 = 359,992.80 : x
  2. Step 2: Convert to fraction form
    631,928.94/872,067.74 = 359,992.80/x
  3. Step 3: Cross multiply
    631,928.94x = 872,067.74 × 359,992.80
  4. Step 4: Simplify right side
    631,928.94x = 313,938,107,512.27
  5. Step 5: Solve for x
    x = 313,938,107,512.27/631,928.94
  6. Step 6: Final answer
    x = 496,793.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.