Home / 685,229,286.62-945,617,615.14-371,963,712.80

Finding the Fourth Proportional to 685,229,286.62, 945,617,615.14 and 371,963,712.80

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Solution

The fourth proportional to 685,229,286.62, 945,617,615.14 and 371,963,712.80 is: 513,310,574.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,229,286.62 : 945,617,615.14 = 371,963,712.80 : x
  2. Step 2: Convert to fraction form
    685,229,286.62/945,617,615.14 = 371,963,712.80/x
  3. Step 3: Cross multiply
    685,229,286.62x = 945,617,615.14 × 371,963,712.80
  4. Step 4: Simplify right side
    685,229,286.62x = 351,735,439,020,764,928
  5. Step 5: Solve for x
    x = 351,735,439,020,764,928/685,229,286.62
  6. Step 6: Final answer
    x = 513,310,574.85

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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.