Home / 814,107.89-1,122,171.22-641,744.95

Finding the Fourth Proportional to 814,107.89, 1,122,171.22 and 641,744.95

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Solution

The fourth proportional to 814,107.89, 1,122,171.22 and 641,744.95 is: 884,585.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,107.89 : 1,122,171.22 = 641,744.95 : x
  2. Step 2: Convert to fraction form
    814,107.89/1,122,171.22 = 641,744.95/x
  3. Step 3: Cross multiply
    814,107.89x = 1,122,171.22 × 641,744.95
  4. Step 4: Simplify right side
    814,107.89x = 720,147,713,470.34
  5. Step 5: Solve for x
    x = 720,147,713,470.34/814,107.89
  6. Step 6: Final answer
    x = 884,585.11

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1.5x scale

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.