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Finding the Fourth Proportional to 3,318,990.06, 4,978,831.08 and 1,269,646.62

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Solution

The fourth proportional to 3,318,990.06, 4,978,831.08 and 1,269,646.62 is: 1,904,602.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318,990.06 : 4,978,831.08 = 1,269,646.62 : x
  2. Step 2: Convert to fraction form
    3,318,990.06/4,978,831.08 = 1,269,646.62/x
  3. Step 3: Cross multiply
    3,318,990.06x = 4,978,831.08 × 1,269,646.62
  4. Step 4: Simplify right side
    3,318,990.06x = 6,321,356,052,272.95
  5. Step 5: Solve for x
    x = 6,321,356,052,272.95/3,318,990.06
  6. Step 6: Final answer
    x = 1,904,602.29

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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.