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Finding the Fourth Proportional to 685,280.33, 945,694.33 and 379,361.81

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Solution

The fourth proportional to 685,280.33, 945,694.33 and 379,361.81 is: 523,523.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,280.33 : 945,694.33 = 379,361.81 : x
  2. Step 2: Convert to fraction form
    685,280.33/945,694.33 = 379,361.81/x
  3. Step 3: Cross multiply
    685,280.33x = 945,694.33 × 379,361.81
  4. Step 4: Simplify right side
    685,280.33x = 358,760,315,218.32
  5. Step 5: Solve for x
    x = 358,760,315,218.32/685,280.33
  6. Step 6: Final answer
    x = 523,523.44

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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.