Home / 1,260,378.80-1,888,840.20-809,716.40

Finding the Fourth Proportional to 1,260,378.80, 1,888,840.20 and 809,716.40

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Solution

The fourth proportional to 1,260,378.80, 1,888,840.20 and 809,716.40 is: 1,213,464.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,378.80 : 1,888,840.20 = 809,716.40 : x
  2. Step 2: Convert to fraction form
    1,260,378.80/1,888,840.20 = 809,716.40/x
  3. Step 3: Cross multiply
    1,260,378.80x = 1,888,840.20 × 809,716.40
  4. Step 4: Simplify right side
    1,260,378.80x = 1,529,424,886,919.28
  5. Step 5: Solve for x
    x = 1,529,424,886,919.28/1,260,378.80
  6. Step 6: Final answer
    x = 1,213,464.47

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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.