Home / 1,331,905.20-1,998,003.60-1,289,914.80

Finding the Fourth Proportional to 1,331,905.20, 1,998,003.60 and 1,289,914.80

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Solution

The fourth proportional to 1,331,905.20, 1,998,003.60 and 1,289,914.80 is: 1,935,013.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,905.20 : 1,998,003.60 = 1,289,914.80 : x
  2. Step 2: Convert to fraction form
    1,331,905.20/1,998,003.60 = 1,289,914.80/x
  3. Step 3: Cross multiply
    1,331,905.20x = 1,998,003.60 × 1,289,914.80
  4. Step 4: Simplify right side
    1,331,905.20x = 2,577,254,414,093.28
  5. Step 5: Solve for x
    x = 2,577,254,414,093.28/1,331,905.20
  6. Step 6: Final answer
    x = 1,935,013.40

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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.