Home / 1,311,116.22-1,809,371.32-730,378.42

Finding the Fourth Proportional to 1,311,116.22, 1,809,371.32 and 730,378.42

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Solution

The fourth proportional to 1,311,116.22, 1,809,371.32 and 730,378.42 is: 1,007,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,116.22 : 1,809,371.32 = 730,378.42 : x
  2. Step 2: Convert to fraction form
    1,311,116.22/1,809,371.32 = 730,378.42/x
  3. Step 3: Cross multiply
    1,311,116.22x = 1,809,371.32 × 730,378.42
  4. Step 4: Simplify right side
    1,311,116.22x = 1,321,525,759,545.54
  5. Step 5: Solve for x
    x = 1,321,525,759,545.54/1,311,116.22
  6. Step 6: Final answer
    x = 1,007,939.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.