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Finding the Fourth Proportional to 685,074.03, 945,395.19 and 379,151

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Solution

The fourth proportional to 685,074.03, 945,395.19 and 379,151 is: 523,224.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,074.03 : 945,395.19 = 379,151 : x
  2. Step 2: Convert to fraction form
    685,074.03/945,395.19 = 379,151/x
  3. Step 3: Cross multiply
    685,074.03x = 945,395.19 × 379,151
  4. Step 4: Simplify right side
    685,074.03x = 358,447,531,683.69
  5. Step 5: Solve for x
    x = 358,447,531,683.69/685,074.03
  6. Step 6: Final answer
    x = 523,224.53

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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.