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Finding the Fourth Proportional to 605,505.62, 907,943.07 and 285,571.59

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Solution

The fourth proportional to 605,505.62, 907,943.07 and 285,571.59 is: 428,208.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,505.62 : 907,943.07 = 285,571.59 : x
  2. Step 2: Convert to fraction form
    605,505.62/907,943.07 = 285,571.59/x
  3. Step 3: Cross multiply
    605,505.62x = 907,943.07 × 285,571.59
  4. Step 4: Simplify right side
    605,505.62x = 259,282,740,161.81
  5. Step 5: Solve for x
    x = 259,282,740,161.81/605,505.62
  6. Step 6: Final answer
    x = 428,208.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.