Home / 769,040.27-1,061,243.46-442,328.44

Finding the Fourth Proportional to 769,040.27, 1,061,243.46 and 442,328.44

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Solution

The fourth proportional to 769,040.27, 1,061,243.46 and 442,328.44 is: 610,394.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,040.27 : 1,061,243.46 = 442,328.44 : x
  2. Step 2: Convert to fraction form
    769,040.27/1,061,243.46 = 442,328.44/x
  3. Step 3: Cross multiply
    769,040.27x = 1,061,243.46 × 442,328.44
  4. Step 4: Simplify right side
    769,040.27x = 469,418,167,880.93
  5. Step 5: Solve for x
    x = 469,418,167,880.93/769,040.27
  6. Step 6: Final answer
    x = 610,394.78

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Double scale
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1.5x scale

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.