Home / 857,917.53-1,286,843.94-258,862.71

Finding the Fourth Proportional to 857,917.53, 1,286,843.94 and 258,862.71

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Solution

The fourth proportional to 857,917.53, 1,286,843.94 and 258,862.71 is: 388,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,917.53 : 1,286,843.94 = 258,862.71 : x
  2. Step 2: Convert to fraction form
    857,917.53/1,286,843.94 = 258,862.71/x
  3. Step 3: Cross multiply
    857,917.53x = 1,286,843.94 × 258,862.71
  4. Step 4: Simplify right side
    857,917.53x = 333,115,909,655.48
  5. Step 5: Solve for x
    x = 333,115,909,655.48/857,917.53
  6. Step 6: Final answer
    x = 388,284.30

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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.