Home / 627,979.20-941,968.80-379,147.20

Finding the Fourth Proportional to 627,979.20, 941,968.80 and 379,147.20

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Solution

The fourth proportional to 627,979.20, 941,968.80 and 379,147.20 is: 568,720.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,979.20 : 941,968.80 = 379,147.20 : x
  2. Step 2: Convert to fraction form
    627,979.20/941,968.80 = 379,147.20/x
  3. Step 3: Cross multiply
    627,979.20x = 941,968.80 × 379,147.20
  4. Step 4: Simplify right side
    627,979.20x = 357,144,833,007.36
  5. Step 5: Solve for x
    x = 357,144,833,007.36/627,979.20
  6. Step 6: Final answer
    x = 568,720.80

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Double scale
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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.