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Finding the Fourth Proportional to 605,729.90, 907,610.70 and 505,346.60

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Solution

The fourth proportional to 605,729.90, 907,610.70 and 505,346.60 is: 757,198.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,729.90 : 907,610.70 = 505,346.60 : x
  2. Step 2: Convert to fraction form
    605,729.90/907,610.70 = 505,346.60/x
  3. Step 3: Cross multiply
    605,729.90x = 907,610.70 × 505,346.60
  4. Step 4: Simplify right side
    605,729.90x = 458,657,981,368.62
  5. Step 5: Solve for x
    x = 458,657,981,368.62/605,729.90
  6. Step 6: Final answer
    x = 757,198.85

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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.