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Finding the Fourth Proportional to 605,723.90, 907,601.70 and 505,340.60

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Solution

The fourth proportional to 605,723.90, 907,601.70 and 505,340.60 is: 757,189.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,723.90 : 907,601.70 = 505,340.60 : x
  2. Step 2: Convert to fraction form
    605,723.90/907,601.70 = 505,340.60/x
  3. Step 3: Cross multiply
    605,723.90x = 907,601.70 × 505,340.60
  4. Step 4: Simplify right side
    605,723.90x = 458,647,987,639.02
  5. Step 5: Solve for x
    x = 458,647,987,639.02/605,723.90
  6. Step 6: Final answer
    x = 757,189.85

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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.