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Finding the Fourth Proportional to 685,532.12, 946,033.70 and 379,608.48

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Solution

The fourth proportional to 685,532.12, 946,033.70 and 379,608.48 is: 523,859.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,532.12 : 946,033.70 = 379,608.48 : x
  2. Step 2: Convert to fraction form
    685,532.12/946,033.70 = 379,608.48/x
  3. Step 3: Cross multiply
    685,532.12x = 946,033.70 × 379,608.48
  4. Step 4: Simplify right side
    685,532.12x = 359,122,414,885.78
  5. Step 5: Solve for x
    x = 359,122,414,885.78/685,532.12
  6. Step 6: Final answer
    x = 523,859.36

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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.