Home / 858,900.30-1,288,350.45-605,645.70

Finding the Fourth Proportional to 858,900.30, 1,288,350.45 and 605,645.70

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Solution

The fourth proportional to 858,900.30, 1,288,350.45 and 605,645.70 is: 908,468.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,900.30 : 1,288,350.45 = 605,645.70 : x
  2. Step 2: Convert to fraction form
    858,900.30/1,288,350.45 = 605,645.70/x
  3. Step 3: Cross multiply
    858,900.30x = 1,288,350.45 × 605,645.70
  4. Step 4: Simplify right side
    858,900.30x = 780,283,910,135.57
  5. Step 5: Solve for x
    x = 780,283,910,135.57/858,900.30
  6. Step 6: Final answer
    x = 908,468.55

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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.