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Finding the Fourth Proportional to 5,978,483.60, 8,968,600.20 and 3,138,809.90

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Solution

The fourth proportional to 5,978,483.60, 8,968,600.20 and 3,138,809.90 is: 4,708,674.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978,483.60 : 8,968,600.20 = 3,138,809.90 : x
  2. Step 2: Convert to fraction form
    5,978,483.60/8,968,600.20 = 3,138,809.90/x
  3. Step 3: Cross multiply
    5,978,483.60x = 8,968,600.20 × 3,138,809.90
  4. Step 4: Simplify right side
    5,978,483.60x = 28,150,731,096,901.98
  5. Step 5: Solve for x
    x = 28,150,731,096,901.98/5,978,483.60
  6. Step 6: Final answer
    x = 4,708,674.14

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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.