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Finding the Fourth Proportional to 866,629.72, 1,299,679.71 and 305,533

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Solution

The fourth proportional to 866,629.72, 1,299,679.71 and 305,533 is: 458,206.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,629.72 : 1,299,679.71 = 305,533 : x
  2. Step 2: Convert to fraction form
    866,629.72/1,299,679.71 = 305,533/x
  3. Step 3: Cross multiply
    866,629.72x = 1,299,679.71 × 305,533
  4. Step 4: Simplify right side
    866,629.72x = 397,095,040,835.43
  5. Step 5: Solve for x
    x = 397,095,040,835.43/866,629.72
  6. Step 6: Final answer
    x = 458,206.12

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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.