Home / 627,747.40-941,621.10-388,052.20

Finding the Fourth Proportional to 627,747.40, 941,621.10 and 388,052.20

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Solution

The fourth proportional to 627,747.40, 941,621.10 and 388,052.20 is: 582,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,747.40 : 941,621.10 = 388,052.20 : x
  2. Step 2: Convert to fraction form
    627,747.40/941,621.10 = 388,052.20/x
  3. Step 3: Cross multiply
    627,747.40x = 941,621.10 × 388,052.20
  4. Step 4: Simplify right side
    627,747.40x = 365,398,139,421.42
  5. Step 5: Solve for x
    x = 365,398,139,421.42/627,747.40
  6. Step 6: Final answer
    x = 582,078.30

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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.