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Finding the Fourth Proportional to 685,517.74, 946,002.92 and 379,587.54

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Solution

The fourth proportional to 685,517.74, 946,002.92 and 379,587.54 is: 523,824.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,517.74 : 946,002.92 = 379,587.54 : x
  2. Step 2: Convert to fraction form
    685,517.74/946,002.92 = 379,587.54/x
  3. Step 3: Cross multiply
    685,517.74x = 946,002.92 × 379,587.54
  4. Step 4: Simplify right side
    685,517.74x = 359,090,922,885.19
  5. Step 5: Solve for x
    x = 359,090,922,885.19/685,517.74
  6. Step 6: Final answer
    x = 523,824.41

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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.