Home / 685,960.62-946,454.67-395,660.94

Finding the Fourth Proportional to 685,960.62, 946,454.67 and 395,660.94

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Solution

The fourth proportional to 685,960.62, 946,454.67 and 395,660.94 is: 545,913.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,960.62 : 946,454.67 = 395,660.94 : x
  2. Step 2: Convert to fraction form
    685,960.62/946,454.67 = 395,660.94/x
  3. Step 3: Cross multiply
    685,960.62x = 946,454.67 × 395,660.94
  4. Step 4: Simplify right side
    685,960.62x = 374,475,144,399.59
  5. Step 5: Solve for x
    x = 374,475,144,399.59/685,960.62
  6. Step 6: Final answer
    x = 545,913.47

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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.