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Finding the Fourth Proportional to 605,515.61, 907,958.07 and 285,581.58

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Solution

The fourth proportional to 605,515.61, 907,958.07 and 285,581.58 is: 428,223.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,515.61 : 907,958.07 = 285,581.58 : x
  2. Step 2: Convert to fraction form
    605,515.61/907,958.07 = 285,581.58/x
  3. Step 3: Cross multiply
    605,515.61x = 907,958.07 × 285,581.58
  4. Step 4: Simplify right side
    605,515.61x = 259,296,100,204.35
  5. Step 5: Solve for x
    x = 259,296,100,204.35/605,515.61
  6. Step 6: Final answer
    x = 428,223.65

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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.