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Finding the Fourth Proportional to 1,992,944.40, 2,989,416.60 and 982,258.80

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Solution

The fourth proportional to 1,992,944.40, 2,989,416.60 and 982,258.80 is: 1,473,388.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,944.40 : 2,989,416.60 = 982,258.80 : x
  2. Step 2: Convert to fraction form
    1,992,944.40/2,989,416.60 = 982,258.80/x
  3. Step 3: Cross multiply
    1,992,944.40x = 2,989,416.60 × 982,258.80
  4. Step 4: Simplify right side
    1,992,944.40x = 2,936,380,762,216.08
  5. Step 5: Solve for x
    x = 2,936,380,762,216.08/1,992,944.40
  6. Step 6: Final answer
    x = 1,473,388.20

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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.