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Finding the Fourth Proportional to 2,939,998.40, 4,409,738.40 and 809,892.80

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Solution

The fourth proportional to 2,939,998.40, 4,409,738.40 and 809,892.80 is: 1,214,767.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939,998.40 : 4,409,738.40 = 809,892.80 : x
  2. Step 2: Convert to fraction form
    2,939,998.40/4,409,738.40 = 809,892.80/x
  3. Step 3: Cross multiply
    2,939,998.40x = 4,409,738.40 × 809,892.80
  4. Step 4: Simplify right side
    2,939,998.40x = 3,571,415,380,043.52
  5. Step 5: Solve for x
    x = 3,571,415,380,043.52/2,939,998.40
  6. Step 6: Final answer
    x = 1,214,767.80

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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.