Home / 857,923-1,286,852.19-258,868.24

Finding the Fourth Proportional to 857,923, 1,286,852.19 and 258,868.24

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Solution

The fourth proportional to 857,923, 1,286,852.19 and 258,868.24 is: 388,292.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,923 : 1,286,852.19 = 258,868.24 : x
  2. Step 2: Convert to fraction form
    857,923/1,286,852.19 = 258,868.24/x
  3. Step 3: Cross multiply
    857,923x = 1,286,852.19 × 258,868.24
  4. Step 4: Simplify right side
    857,923x = 333,125,161,565.45
  5. Step 5: Solve for x
    x = 333,125,161,565.45/857,923
  6. Step 6: Final answer
    x = 388,292.61

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Double scale
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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.