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Finding the Fourth Proportional to 1,308,541.07, 1,805,519.73 and 764,571.65

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Solution

The fourth proportional to 1,308,541.07, 1,805,519.73 and 764,571.65 is: 1,054,952.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,541.07 : 1,805,519.73 = 764,571.65 : x
  2. Step 2: Convert to fraction form
    1,308,541.07/1,805,519.73 = 764,571.65/x
  3. Step 3: Cross multiply
    1,308,541.07x = 1,805,519.73 × 764,571.65
  4. Step 4: Simplify right side
    1,308,541.07x = 1,380,449,190,046.06
  5. Step 5: Solve for x
    x = 1,380,449,190,046.06/1,308,541.07
  6. Step 6: Final answer
    x = 1,054,952.90

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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.