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Finding the Fourth Proportional to 492,799.72, 680,055.78 and 277,940.20

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Solution

The fourth proportional to 492,799.72, 680,055.78 and 277,940.20 is: 383,553.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,799.72 : 680,055.78 = 277,940.20 : x
  2. Step 2: Convert to fraction form
    492,799.72/680,055.78 = 277,940.20/x
  3. Step 3: Cross multiply
    492,799.72x = 680,055.78 × 277,940.20
  4. Step 4: Simplify right side
    492,799.72x = 189,014,839,504.36
  5. Step 5: Solve for x
    x = 189,014,839,504.36/492,799.72
  6. Step 6: Final answer
    x = 383,553.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.