Home / 685,424.49-945,915.36-379,500.88

Finding the Fourth Proportional to 685,424.49, 945,915.36 and 379,500.88

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Solution

The fourth proportional to 685,424.49, 945,915.36 and 379,500.88 is: 523,727.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,424.49 : 945,915.36 = 379,500.88 : x
  2. Step 2: Convert to fraction form
    685,424.49/945,915.36 = 379,500.88/x
  3. Step 3: Cross multiply
    685,424.49x = 945,915.36 × 379,500.88
  4. Step 4: Simplify right side
    685,424.49x = 358,975,705,847.19
  5. Step 5: Solve for x
    x = 358,975,705,847.19/685,424.49
  6. Step 6: Final answer
    x = 523,727.57

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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.