Home / 1,189,229.49-1,641,137.73-645,365.25

Finding the Fourth Proportional to 1,189,229.49, 1,641,137.73 and 645,365.25

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Solution

The fourth proportional to 1,189,229.49, 1,641,137.73 and 645,365.25 is: 890,604.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,229.49 : 1,641,137.73 = 645,365.25 : x
  2. Step 2: Convert to fraction form
    1,189,229.49/1,641,137.73 = 645,365.25/x
  3. Step 3: Cross multiply
    1,189,229.49x = 1,641,137.73 × 645,365.25
  4. Step 4: Simplify right side
    1,189,229.49x = 1,059,133,261,405.88
  5. Step 5: Solve for x
    x = 1,059,133,261,405.88/1,189,229.49
  6. Step 6: Final answer
    x = 890,604.61

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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.