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Finding the Fourth Proportional to 685,466.96, 945,910.77 and 379,534.82

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Solution

The fourth proportional to 685,466.96, 945,910.77 and 379,534.82 is: 523,739.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,466.96 : 945,910.77 = 379,534.82 : x
  2. Step 2: Convert to fraction form
    685,466.96/945,910.77 = 379,534.82/x
  3. Step 3: Cross multiply
    685,466.96x = 945,910.77 × 379,534.82
  4. Step 4: Simplify right side
    685,466.96x = 359,006,072,645.62
  5. Step 5: Solve for x
    x = 359,006,072,645.62/685,466.96
  6. Step 6: Final answer
    x = 523,739.43

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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.