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Finding the Fourth Proportional to 685,047.53, 945,367.34 and 379,144.96

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Solution

The fourth proportional to 685,047.53, 945,367.34 and 379,144.96 is: 523,221.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,047.53 : 945,367.34 = 379,144.96 : x
  2. Step 2: Convert to fraction form
    685,047.53/945,367.34 = 379,144.96/x
  3. Step 3: Cross multiply
    685,047.53x = 945,367.34 × 379,144.96
  4. Step 4: Simplify right side
    685,047.53x = 358,431,258,050.46
  5. Step 5: Solve for x
    x = 358,431,258,050.46/685,047.53
  6. Step 6: Final answer
    x = 523,221.00

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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.