Home / 1,189,481.58-1,641,440.61-645,605.78

Finding the Fourth Proportional to 1,189,481.58, 1,641,440.61 and 645,605.78

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Solution

The fourth proportional to 1,189,481.58, 1,641,440.61 and 645,605.78 is: 890,912.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,481.58 : 1,641,440.61 = 645,605.78 : x
  2. Step 2: Convert to fraction form
    1,189,481.58/1,641,440.61 = 645,605.78/x
  3. Step 3: Cross multiply
    1,189,481.58x = 1,641,440.61 × 645,605.78
  4. Step 4: Simplify right side
    1,189,481.58x = 1,059,723,548,430.66
  5. Step 5: Solve for x
    x = 1,059,723,548,430.66/1,189,481.58
  6. Step 6: Final answer
    x = 890,912.11

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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.