Home / 919,180.35-1,378,769.72-279,489.33

Finding the Fourth Proportional to 919,180.35, 1,378,769.72 and 279,489.33

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Solution

The fourth proportional to 919,180.35, 1,378,769.72 and 279,489.33 is: 419,233.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,180.35 : 1,378,769.72 = 279,489.33 : x
  2. Step 2: Convert to fraction form
    919,180.35/1,378,769.72 = 279,489.33/x
  3. Step 3: Cross multiply
    919,180.35x = 1,378,769.72 × 279,489.33
  4. Step 4: Simplify right side
    919,180.35x = 385,351,423,869.64
  5. Step 5: Solve for x
    x = 385,351,423,869.64/919,180.35
  6. Step 6: Final answer
    x = 419,233.75

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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.