Home / 858,910.80-1,288,366.20-770,337.30

Finding the Fourth Proportional to 858,910.80, 1,288,366.20 and 770,337.30

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Solution

The fourth proportional to 858,910.80, 1,288,366.20 and 770,337.30 is: 1,155,505.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,910.80 : 1,288,366.20 = 770,337.30 : x
  2. Step 2: Convert to fraction form
    858,910.80/1,288,366.20 = 770,337.30/x
  3. Step 3: Cross multiply
    858,910.80x = 1,288,366.20 × 770,337.30
  4. Step 4: Simplify right side
    858,910.80x = 992,476,539,919.26
  5. Step 5: Solve for x
    x = 992,476,539,919.26/858,910.80
  6. Step 6: Final answer
    x = 1,155,505.95

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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.