Home / 919,072.80-1,378,609.20-279,375.30

Finding the Fourth Proportional to 919,072.80, 1,378,609.20 and 279,375.30

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Solution

The fourth proportional to 919,072.80, 1,378,609.20 and 279,375.30 is: 419,062.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,072.80 : 1,378,609.20 = 279,375.30 : x
  2. Step 2: Convert to fraction form
    919,072.80/1,378,609.20 = 279,375.30/x
  3. Step 3: Cross multiply
    919,072.80x = 1,378,609.20 × 279,375.30
  4. Step 4: Simplify right side
    919,072.80x = 385,149,358,832.76
  5. Step 5: Solve for x
    x = 385,149,358,832.76/919,072.80
  6. Step 6: Final answer
    x = 419,062.95

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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.