Home / 858,273.56-1,287,530.68-259,166.80

Finding the Fourth Proportional to 858,273.56, 1,287,530.68 and 259,166.80

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Solution

The fourth proportional to 858,273.56, 1,287,530.68 and 259,166.80 is: 388,786.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,273.56 : 1,287,530.68 = 259,166.80 : x
  2. Step 2: Convert to fraction form
    858,273.56/1,287,530.68 = 259,166.80/x
  3. Step 3: Cross multiply
    858,273.56x = 1,287,530.68 × 259,166.80
  4. Step 4: Simplify right side
    858,273.56x = 333,685,206,237.42
  5. Step 5: Solve for x
    x = 333,685,206,237.42/858,273.56
  6. Step 6: Final answer
    x = 388,786.54

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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.