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Finding the Fourth Proportional to 675,418.52, 931,986.25 and 385,067.54

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Solution

The fourth proportional to 675,418.52, 931,986.25 and 385,067.54 is: 531,341.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,418.52 : 931,986.25 = 385,067.54 : x
  2. Step 2: Convert to fraction form
    675,418.52/931,986.25 = 385,067.54/x
  3. Step 3: Cross multiply
    675,418.52x = 931,986.25 × 385,067.54
  4. Step 4: Simplify right side
    675,418.52x = 358,877,646,978.73
  5. Step 5: Solve for x
    x = 358,877,646,978.73/675,418.52
  6. Step 6: Final answer
    x = 531,341.14

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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.