Home / 685,772.42-946,285.09-395,380.73

Finding the Fourth Proportional to 685,772.42, 946,285.09 and 395,380.73

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Solution

The fourth proportional to 685,772.42, 946,285.09 and 395,380.73 is: 545,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,772.42 : 946,285.09 = 395,380.73 : x
  2. Step 2: Convert to fraction form
    685,772.42/946,285.09 = 395,380.73/x
  3. Step 3: Cross multiply
    685,772.42x = 946,285.09 × 395,380.73
  4. Step 4: Simplify right side
    685,772.42x = 374,142,891,049.58
  5. Step 5: Solve for x
    x = 374,142,891,049.58/685,772.42
  6. Step 6: Final answer
    x = 545,578.80

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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.