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Finding the Fourth Proportional to 576,016.60, 864,024.90 and 388,010.20

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Solution

The fourth proportional to 576,016.60, 864,024.90 and 388,010.20 is: 582,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,016.60 : 864,024.90 = 388,010.20 : x
  2. Step 2: Convert to fraction form
    576,016.60/864,024.90 = 388,010.20/x
  3. Step 3: Cross multiply
    576,016.60x = 864,024.90 × 388,010.20
  4. Step 4: Simplify right side
    576,016.60x = 335,250,474,253.98
  5. Step 5: Solve for x
    x = 335,250,474,253.98/576,016.60
  6. Step 6: Final answer
    x = 582,015.30

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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.