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Finding the Fourth Proportional to 5,978,166.60, 8,968,124.70 and 3,138,492.90

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Solution

The fourth proportional to 5,978,166.60, 8,968,124.70 and 3,138,492.90 is: 4,708,198.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978,166.60 : 8,968,124.70 = 3,138,492.90 : x
  2. Step 2: Convert to fraction form
    5,978,166.60/8,968,124.70 = 3,138,492.90/x
  3. Step 3: Cross multiply
    5,978,166.60x = 8,968,124.70 × 3,138,492.90
  4. Step 4: Simplify right side
    5,978,166.60x = 28,146,395,697,264.62
  5. Step 5: Solve for x
    x = 28,146,395,697,264.62/5,978,166.60
  6. Step 6: Final answer
    x = 4,708,198.61

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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.