Home / 858,449.51-1,286,694.74-345,786.37

Finding the Fourth Proportional to 858,449.51, 1,286,694.74 and 345,786.37

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Solution

The fourth proportional to 858,449.51, 1,286,694.74 and 345,786.37 is: 518,284.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,449.51 : 1,286,694.74 = 345,786.37 : x
  2. Step 2: Convert to fraction form
    858,449.51/1,286,694.74 = 345,786.37/x
  3. Step 3: Cross multiply
    858,449.51x = 1,286,694.74 × 345,786.37
  4. Step 4: Simplify right side
    858,449.51x = 444,921,499,145.38
  5. Step 5: Solve for x
    x = 444,921,499,145.38/858,449.51
  6. Step 6: Final answer
    x = 518,284.99

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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.