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Finding the Fourth Proportional to 5,978,685.20, 8,968,027.80 and 2,193,644.30

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Solution

The fourth proportional to 5,978,685.20, 8,968,027.80 and 2,193,644.30 is: 3,290,466.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978,685.20 : 8,968,027.80 = 2,193,644.30 : x
  2. Step 2: Convert to fraction form
    5,978,685.20/8,968,027.80 = 2,193,644.30/x
  3. Step 3: Cross multiply
    5,978,685.20x = 8,968,027.80 × 2,193,644.30
  4. Step 4: Simplify right side
    5,978,685.20x = 19,672,663,065,711.54
  5. Step 5: Solve for x
    x = 19,672,663,065,711.54/5,978,685.20
  6. Step 6: Final answer
    x = 3,290,466.45

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Double scale
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Similar ratio
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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.