Home / 3,419,078.40-5,128,617.60-1,998,403.20

Finding the Fourth Proportional to 3,419,078.40, 5,128,617.60 and 1,998,403.20

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Solution

The fourth proportional to 3,419,078.40, 5,128,617.60 and 1,998,403.20 is: 2,997,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419,078.40 : 5,128,617.60 = 1,998,403.20 : x
  2. Step 2: Convert to fraction form
    3,419,078.40/5,128,617.60 = 1,998,403.20/x
  3. Step 3: Cross multiply
    3,419,078.40x = 5,128,617.60 × 1,998,403.20
  4. Step 4: Simplify right side
    3,419,078.40x = 10,249,045,823,416.32
  5. Step 5: Solve for x
    x = 10,249,045,823,416.32/3,419,078.40
  6. Step 6: Final answer
    x = 2,997,604.80

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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.