Home / 1,188,589.20-1,640,365.08-679,192.56

Finding the Fourth Proportional to 1,188,589.20, 1,640,365.08 and 679,192.56

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Solution

The fourth proportional to 1,188,589.20, 1,640,365.08 and 679,192.56 is: 937,349.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,589.20 : 1,640,365.08 = 679,192.56 : x
  2. Step 2: Convert to fraction form
    1,188,589.20/1,640,365.08 = 679,192.56/x
  3. Step 3: Cross multiply
    1,188,589.20x = 1,640,365.08 × 679,192.56
  4. Step 4: Simplify right side
    1,188,589.20x = 1,114,123,758,019.81
  5. Step 5: Solve for x
    x = 1,114,123,758,019.81/1,188,589.20
  6. Step 6: Final answer
    x = 937,349.72

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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.