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Finding the Fourth Proportional to 3,318,989.06, 4,978,829.58 and 1,269,645.62

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Solution

The fourth proportional to 3,318,989.06, 4,978,829.58 and 1,269,645.62 is: 1,904,600.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318,989.06 : 4,978,829.58 = 1,269,645.62 : x
  2. Step 2: Convert to fraction form
    3,318,989.06/4,978,829.58 = 1,269,645.62/x
  3. Step 3: Cross multiply
    3,318,989.06x = 4,978,829.58 × 1,269,645.62
  4. Step 4: Simplify right side
    3,318,989.06x = 6,321,349,174,465.79
  5. Step 5: Solve for x
    x = 6,321,349,174,465.79/3,318,989.06
  6. Step 6: Final answer
    x = 1,904,600.79

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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.