Home / 1,280,879.80-1,919,246.10-806,716.60

Finding the Fourth Proportional to 1,280,879.80, 1,919,246.10 and 806,716.60

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Solution

The fourth proportional to 1,280,879.80, 1,919,246.10 and 806,716.60 is: 1,208,768.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,879.80 : 1,919,246.10 = 806,716.60 : x
  2. Step 2: Convert to fraction form
    1,280,879.80/1,919,246.10 = 806,716.60/x
  3. Step 3: Cross multiply
    1,280,879.80x = 1,919,246.10 × 806,716.60
  4. Step 4: Simplify right side
    1,280,879.80x = 1,548,287,688,355.26
  5. Step 5: Solve for x
    x = 1,548,287,688,355.26/1,280,879.80
  6. Step 6: Final answer
    x = 1,208,768.92

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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.