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Finding the Fourth Proportional to 1,267,921.86, 1,749,728.52 and 694,960.26

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Solution

The fourth proportional to 1,267,921.86, 1,749,728.52 and 694,960.26 is: 959,043.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,921.86 : 1,749,728.52 = 694,960.26 : x
  2. Step 2: Convert to fraction form
    1,267,921.86/1,749,728.52 = 694,960.26/x
  3. Step 3: Cross multiply
    1,267,921.86x = 1,749,728.52 × 694,960.26
  4. Step 4: Simplify right side
    1,267,921.86x = 1,215,991,787,188.62
  5. Step 5: Solve for x
    x = 1,215,991,787,188.62/1,267,921.86
  6. Step 6: Final answer
    x = 959,043.16

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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.