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Finding the Fourth Proportional to 396,003.40, 594,005.10 and 388,130.20

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Solution

The fourth proportional to 396,003.40, 594,005.10 and 388,130.20 is: 582,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,003.40 : 594,005.10 = 388,130.20 : x
  2. Step 2: Convert to fraction form
    396,003.40/594,005.10 = 388,130.20/x
  3. Step 3: Cross multiply
    396,003.40x = 594,005.10 × 388,130.20
  4. Step 4: Simplify right side
    396,003.40x = 230,551,318,264.02
  5. Step 5: Solve for x
    x = 230,551,318,264.02/396,003.40
  6. Step 6: Final answer
    x = 582,195.30

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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.