Home / 817,811.72-1,226,766.79-256,846.22

Finding the Fourth Proportional to 817,811.72, 1,226,766.79 and 256,846.22

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Solution

The fourth proportional to 817,811.72, 1,226,766.79 and 256,846.22 is: 385,284.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,811.72 : 1,226,766.79 = 256,846.22 : x
  2. Step 2: Convert to fraction form
    817,811.72/1,226,766.79 = 256,846.22/x
  3. Step 3: Cross multiply
    817,811.72x = 1,226,766.79 × 256,846.22
  4. Step 4: Simplify right side
    817,811.72x = 315,090,412,833.03
  5. Step 5: Solve for x
    x = 315,090,412,833.03/817,811.72
  6. Step 6: Final answer
    x = 385,284.79

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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.