Home / 858,268.20-1,287,424.19-259,248.90

Finding the Fourth Proportional to 858,268.20, 1,287,424.19 and 259,248.90

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Solution

The fourth proportional to 858,268.20, 1,287,424.19 and 259,248.90 is: 388,879.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,268.20 : 1,287,424.19 = 259,248.90 : x
  2. Step 2: Convert to fraction form
    858,268.20/1,287,424.19 = 259,248.90/x
  3. Step 3: Cross multiply
    858,268.20x = 1,287,424.19 × 259,248.90
  4. Step 4: Simplify right side
    858,268.20x = 333,763,305,090.89
  5. Step 5: Solve for x
    x = 333,763,305,090.89/858,268.20
  6. Step 6: Final answer
    x = 388,879.96

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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.