Home / 857,953.94-1,286,940.10-258,920.47

Finding the Fourth Proportional to 857,953.94, 1,286,940.10 and 258,920.47

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Solution

The fourth proportional to 857,953.94, 1,286,940.10 and 258,920.47 is: 388,383.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,953.94 : 1,286,940.10 = 258,920.47 : x
  2. Step 2: Convert to fraction form
    857,953.94/1,286,940.10 = 258,920.47/x
  3. Step 3: Cross multiply
    857,953.94x = 1,286,940.10 × 258,920.47
  4. Step 4: Simplify right side
    857,953.94x = 333,215,135,553.85
  5. Step 5: Solve for x
    x = 333,215,135,553.85/857,953.94
  6. Step 6: Final answer
    x = 388,383.48

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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.