Home / 815,781,615.28-1,223,171,295.58-317,210,976.54

Finding the Fourth Proportional to 815,781,615.28, 1,223,171,295.58 and 317,210,976.54

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Solution

The fourth proportional to 815,781,615.28, 1,223,171,295.58 and 317,210,976.54 is: 475,621,604.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,781,615.28 : 1,223,171,295.58 = 317,210,976.54 : x
  2. Step 2: Convert to fraction form
    815,781,615.28/1,223,171,295.58 = 317,210,976.54/x
  3. Step 3: Cross multiply
    815,781,615.28x = 1,223,171,295.58 × 317,210,976.54
  4. Step 4: Simplify right side
    815,781,615.28x = 388,003,361,145,835,840
  5. Step 5: Solve for x
    x = 388,003,361,145,835,840/815,781,615.28
  6. Step 6: Final answer
    x = 475,621,604.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.