Home / 910,940.40-1,366,540.20-279,759.60

Finding the Fourth Proportional to 910,940.40, 1,366,540.20 and 279,759.60

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Solution

The fourth proportional to 910,940.40, 1,366,540.20 and 279,759.60 is: 419,679.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,940.40 : 1,366,540.20 = 279,759.60 : x
  2. Step 2: Convert to fraction form
    910,940.40/1,366,540.20 = 279,759.60/x
  3. Step 3: Cross multiply
    910,940.40x = 1,366,540.20 × 279,759.60
  4. Step 4: Simplify right side
    910,940.40x = 382,302,739,735.92
  5. Step 5: Solve for x
    x = 382,302,739,735.92/910,940.40
  6. Step 6: Final answer
    x = 419,679.20

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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.