Home / 858,786.23-1,288,381.64-259,752.35

Finding the Fourth Proportional to 858,786.23, 1,288,381.64 and 259,752.35

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Solution

The fourth proportional to 858,786.23, 1,288,381.64 and 259,752.35 is: 389,689.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,786.23 : 1,288,381.64 = 259,752.35 : x
  2. Step 2: Convert to fraction form
    858,786.23/1,288,381.64 = 259,752.35/x
  3. Step 3: Cross multiply
    858,786.23x = 1,288,381.64 × 259,752.35
  4. Step 4: Simplify right side
    858,786.23x = 334,660,158,686.85
  5. Step 5: Solve for x
    x = 334,660,158,686.85/858,786.23
  6. Step 6: Final answer
    x = 389,689.71

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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.