Home / 685,630.46-946,172.66-379,700.12

Finding the Fourth Proportional to 685,630.46, 946,172.66 and 379,700.12

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Solution

The fourth proportional to 685,630.46, 946,172.66 and 379,700.12 is: 523,987.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,630.46 : 946,172.66 = 379,700.12 : x
  2. Step 2: Convert to fraction form
    685,630.46/946,172.66 = 379,700.12/x
  3. Step 3: Cross multiply
    685,630.46x = 946,172.66 × 379,700.12
  4. Step 4: Simplify right side
    685,630.46x = 359,261,865,913.36
  5. Step 5: Solve for x
    x = 359,261,865,913.36/685,630.46
  6. Step 6: Final answer
    x = 523,987.61

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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.