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Finding the Fourth Proportional to 685,179.48, 945,523.56 and 379,256.46

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Solution

The fourth proportional to 685,179.48, 945,523.56 and 379,256.46 is: 523,360.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,179.48 : 945,523.56 = 379,256.46 : x
  2. Step 2: Convert to fraction form
    685,179.48/945,523.56 = 379,256.46/x
  3. Step 3: Cross multiply
    685,179.48x = 945,523.56 × 379,256.46
  4. Step 4: Simplify right side
    685,179.48x = 358,595,918,212.20
  5. Step 5: Solve for x
    x = 358,595,918,212.20/685,179.48
  6. Step 6: Final answer
    x = 523,360.56

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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.