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Finding the Fourth Proportional to 675,374.10, 932,039.28 and 385,028.60

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Solution

The fourth proportional to 675,374.10, 932,039.28 and 385,028.60 is: 531,352.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,374.10 : 932,039.28 = 385,028.60 : x
  2. Step 2: Convert to fraction form
    675,374.10/932,039.28 = 385,028.60/x
  3. Step 3: Cross multiply
    675,374.10x = 932,039.28 × 385,028.60
  4. Step 4: Simplify right side
    675,374.10x = 358,861,777,958.36
  5. Step 5: Solve for x
    x = 358,861,777,958.36/675,374.10
  6. Step 6: Final answer
    x = 531,352.59

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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.