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Finding the Fourth Proportional to 605,655.90, 907,499.70 and 505,272.60

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Solution

The fourth proportional to 605,655.90, 907,499.70 and 505,272.60 is: 757,087.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,655.90 : 907,499.70 = 505,272.60 : x
  2. Step 2: Convert to fraction form
    605,655.90/907,499.70 = 505,272.60/x
  3. Step 3: Cross multiply
    605,655.90x = 907,499.70 × 505,272.60
  4. Step 4: Simplify right side
    605,655.90x = 458,534,732,918.22
  5. Step 5: Solve for x
    x = 458,534,732,918.22/605,655.90
  6. Step 6: Final answer
    x = 757,087.87

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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.