Home / 858,796.80-1,288,195.20-770,223.30

Finding the Fourth Proportional to 858,796.80, 1,288,195.20 and 770,223.30

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Solution

The fourth proportional to 858,796.80, 1,288,195.20 and 770,223.30 is: 1,155,334.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,796.80 : 1,288,195.20 = 770,223.30 : x
  2. Step 2: Convert to fraction form
    858,796.80/1,288,195.20 = 770,223.30/x
  3. Step 3: Cross multiply
    858,796.80x = 1,288,195.20 × 770,223.30
  4. Step 4: Simplify right side
    858,796.80x = 992,197,957,988.16
  5. Step 5: Solve for x
    x = 992,197,957,988.16/858,796.80
  6. Step 6: Final answer
    x = 1,155,334.95

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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.