Home / 1,920,720.96-2,880,778.56-1,208,568.96

Finding the Fourth Proportional to 1,920,720.96, 2,880,778.56 and 1,208,568.96

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Solution

The fourth proportional to 1,920,720.96, 2,880,778.56 and 1,208,568.96 is: 1,812,662.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,720.96 : 2,880,778.56 = 1,208,568.96 : x
  2. Step 2: Convert to fraction form
    1,920,720.96/2,880,778.56 = 1,208,568.96/x
  3. Step 3: Cross multiply
    1,920,720.96x = 2,880,778.56 × 1,208,568.96
  4. Step 4: Simplify right side
    1,920,720.96x = 3,481,619,548,249.50
  5. Step 5: Solve for x
    x = 3,481,619,548,249.50/1,920,720.96
  6. Step 6: Final answer
    x = 1,812,662.86

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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.