Home / 1,231,861.28-1,851,072.42-663,678.68

Finding the Fourth Proportional to 1,231,861.28, 1,851,072.42 and 663,678.68

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Solution

The fourth proportional to 1,231,861.28, 1,851,072.42 and 663,678.68 is: 997,285.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,861.28 : 1,851,072.42 = 663,678.68 : x
  2. Step 2: Convert to fraction form
    1,231,861.28/1,851,072.42 = 663,678.68/x
  3. Step 3: Cross multiply
    1,231,861.28x = 1,851,072.42 × 663,678.68
  4. Step 4: Simplify right side
    1,231,861.28x = 1,228,517,300,290.01
  5. Step 5: Solve for x
    x = 1,228,517,300,290.01/1,231,861.28
  6. Step 6: Final answer
    x = 997,285.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.