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Finding the Fourth Proportional to 654,067.60, 902,633.77 and 395,991.88

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Solution

The fourth proportional to 654,067.60, 902,633.77 and 395,991.88 is: 546,481.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,067.60 : 902,633.77 = 395,991.88 : x
  2. Step 2: Convert to fraction form
    654,067.60/902,633.77 = 395,991.88/x
  3. Step 3: Cross multiply
    654,067.60x = 902,633.77 × 395,991.88
  4. Step 4: Simplify right side
    654,067.60x = 357,435,643,533.79
  5. Step 5: Solve for x
    x = 357,435,643,533.79/654,067.60
  6. Step 6: Final answer
    x = 546,481.19

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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.