Home / 641,934.41-885,858.66-355,448.34

Finding the Fourth Proportional to 641,934.41, 885,858.66 and 355,448.34

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Solution

The fourth proportional to 641,934.41, 885,858.66 and 355,448.34 is: 490,512.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,934.41 : 885,858.66 = 355,448.34 : x
  2. Step 2: Convert to fraction form
    641,934.41/885,858.66 = 355,448.34/x
  3. Step 3: Cross multiply
    641,934.41x = 885,858.66 × 355,448.34
  4. Step 4: Simplify right side
    641,934.41x = 314,876,990,171.62
  5. Step 5: Solve for x
    x = 314,876,990,171.62/641,934.41
  6. Step 6: Final answer
    x = 490,512.72

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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.