Home / 857,854.64-1,286,790.60-258,820.76

Finding the Fourth Proportional to 857,854.64, 1,286,790.60 and 258,820.76

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Solution

The fourth proportional to 857,854.64, 1,286,790.60 and 258,820.76 is: 388,233.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,854.64 : 1,286,790.60 = 258,820.76 : x
  2. Step 2: Convert to fraction form
    857,854.64/1,286,790.60 = 258,820.76/x
  3. Step 3: Cross multiply
    857,854.64x = 1,286,790.60 × 258,820.76
  4. Step 4: Simplify right side
    857,854.64x = 333,048,121,052.86
  5. Step 5: Solve for x
    x = 333,048,121,052.86/857,854.64
  6. Step 6: Final answer
    x = 388,233.75

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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.