Home / 857,811.37-1,286,726.30-258,777.72

Finding the Fourth Proportional to 857,811.37, 1,286,726.30 and 258,777.72

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Solution

The fourth proportional to 857,811.37, 1,286,726.30 and 258,777.72 is: 388,169.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,811.37 : 1,286,726.30 = 258,777.72 : x
  2. Step 2: Convert to fraction form
    857,811.37/1,286,726.30 = 258,777.72/x
  3. Step 3: Cross multiply
    857,811.37x = 1,286,726.30 × 258,777.72
  4. Step 4: Simplify right side
    857,811.37x = 332,976,099,060.87
  5. Step 5: Solve for x
    x = 332,976,099,060.87/857,811.37
  6. Step 6: Final answer
    x = 388,169.37

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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.