Home / 857,813.41-1,286,729.35-258,779.76

Finding the Fourth Proportional to 857,813.41, 1,286,729.35 and 258,779.76

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Solution

The fourth proportional to 857,813.41, 1,286,729.35 and 258,779.76 is: 388,172.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,813.41 : 1,286,729.35 = 258,779.76 : x
  2. Step 2: Convert to fraction form
    857,813.41/1,286,729.35 = 258,779.76/x
  3. Step 3: Cross multiply
    857,813.41x = 1,286,729.35 × 258,779.76
  4. Step 4: Simplify right side
    857,813.41x = 332,979,512,377.96
  5. Step 5: Solve for x
    x = 332,979,512,377.96/857,813.41
  6. Step 6: Final answer
    x = 388,172.43

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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.