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Finding the Fourth Proportional to 1,273,946.85, 1,757,845.89 and 729,978.03

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Solution

The fourth proportional to 1,273,946.85, 1,757,845.89 and 729,978.03 is: 1,007,254.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,946.85 : 1,757,845.89 = 729,978.03 : x
  2. Step 2: Convert to fraction form
    1,273,946.85/1,757,845.89 = 729,978.03/x
  3. Step 3: Cross multiply
    1,273,946.85x = 1,757,845.89 × 729,978.03
  4. Step 4: Simplify right side
    1,273,946.85x = 1,283,188,879,825.80
  5. Step 5: Solve for x
    x = 1,283,188,879,825.80/1,273,946.85
  6. Step 6: Final answer
    x = 1,007,254.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.