Home / 919,561.13-1,379,540.22-279,914.88

Finding the Fourth Proportional to 919,561.13, 1,379,540.22 and 279,914.88

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Solution

The fourth proportional to 919,561.13, 1,379,540.22 and 279,914.88 is: 419,932.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,561.13 : 1,379,540.22 = 279,914.88 : x
  2. Step 2: Convert to fraction form
    919,561.13/1,379,540.22 = 279,914.88/x
  3. Step 3: Cross multiply
    919,561.13x = 1,379,540.22 × 279,914.88
  4. Step 4: Simplify right side
    919,561.13x = 386,153,835,136.47
  5. Step 5: Solve for x
    x = 386,153,835,136.47/919,561.13
  6. Step 6: Final answer
    x = 419,932.75

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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.