Home / 1,269,019.20-1,899,788.88-1,111,555.20

Finding the Fourth Proportional to 1,269,019.20, 1,899,788.88 and 1,111,555.20

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Solution

The fourth proportional to 1,269,019.20, 1,899,788.88 and 1,111,555.20 is: 1,664,056.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,019.20 : 1,899,788.88 = 1,111,555.20 : x
  2. Step 2: Convert to fraction form
    1,269,019.20/1,899,788.88 = 1,111,555.20/x
  3. Step 3: Cross multiply
    1,269,019.20x = 1,899,788.88 × 1,111,555.20
  4. Step 4: Simplify right side
    1,269,019.20x = 2,111,720,208,466.18
  5. Step 5: Solve for x
    x = 2,111,720,208,466.18/1,269,019.20
  6. Step 6: Final answer
    x = 1,664,056.94

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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.