Home / 611,786.20-917,679.30-191,104.60

Finding the Fourth Proportional to 611,786.20, 917,679.30 and 191,104.60

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Solution

The fourth proportional to 611,786.20, 917,679.30 and 191,104.60 is: 286,656.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,786.20 : 917,679.30 = 191,104.60 : x
  2. Step 2: Convert to fraction form
    611,786.20/917,679.30 = 191,104.60/x
  3. Step 3: Cross multiply
    611,786.20x = 917,679.30 × 191,104.60
  4. Step 4: Simplify right side
    611,786.20x = 175,372,735,554.78
  5. Step 5: Solve for x
    x = 175,372,735,554.78/611,786.20
  6. Step 6: Final answer
    x = 286,656.90

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Similar ratio
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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.