Home / 856,334.80-1,284,568.62-257,249.08

Finding the Fourth Proportional to 856,334.80, 1,284,568.62 and 257,249.08

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Solution

The fourth proportional to 856,334.80, 1,284,568.62 and 257,249.08 is: 385,893.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,334.80 : 1,284,568.62 = 257,249.08 : x
  2. Step 2: Convert to fraction form
    856,334.80/1,284,568.62 = 257,249.08/x
  3. Step 3: Cross multiply
    856,334.80x = 1,284,568.62 × 257,249.08
  4. Step 4: Simplify right side
    856,334.80x = 330,454,095,691.87
  5. Step 5: Solve for x
    x = 330,454,095,691.87/856,334.80
  6. Step 6: Final answer
    x = 385,893.57

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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.