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Finding the Fourth Proportional to 635,458.09, 876,928.98 and 345,067.07

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Solution

The fourth proportional to 635,458.09, 876,928.98 and 345,067.07 is: 476,190.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,458.09 : 876,928.98 = 345,067.07 : x
  2. Step 2: Convert to fraction form
    635,458.09/876,928.98 = 345,067.07/x
  3. Step 3: Cross multiply
    635,458.09x = 876,928.98 × 345,067.07
  4. Step 4: Simplify right side
    635,458.09x = 302,599,309,342.04
  5. Step 5: Solve for x
    x = 302,599,309,342.04/635,458.09
  6. Step 6: Final answer
    x = 476,190.82

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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.