Home / 621,104.14-857,154.11-349,257.61

Finding the Fourth Proportional to 621,104.14, 857,154.11 and 349,257.61

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Solution

The fourth proportional to 621,104.14, 857,154.11 and 349,257.61 is: 481,992.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,104.14 : 857,154.11 = 349,257.61 : x
  2. Step 2: Convert to fraction form
    621,104.14/857,154.11 = 349,257.61/x
  3. Step 3: Cross multiply
    621,104.14x = 857,154.11 × 349,257.61
  4. Step 4: Simplify right side
    621,104.14x = 299,367,595,860.28
  5. Step 5: Solve for x
    x = 299,367,595,860.28/621,104.14
  6. Step 6: Final answer
    x = 481,992.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.