Home / 1,189,469.49-1,641,447.30-645,593.61

Finding the Fourth Proportional to 1,189,469.49, 1,641,447.30 and 645,593.61

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Solution

The fourth proportional to 1,189,469.49, 1,641,447.30 and 645,593.61 is: 890,908.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,469.49 : 1,641,447.30 = 645,593.61 : x
  2. Step 2: Convert to fraction form
    1,189,469.49/1,641,447.30 = 645,593.61/x
  3. Step 3: Cross multiply
    1,189,469.49x = 1,641,447.30 × 645,593.61
  4. Step 4: Simplify right side
    1,189,469.49x = 1,059,707,886,467.12
  5. Step 5: Solve for x
    x = 1,059,707,886,467.12/1,189,469.49
  6. Step 6: Final answer
    x = 890,908.00

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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.