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Finding the Fourth Proportional to 1,354,863.26, 1,869,713.92 and 743,020.32

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Solution

The fourth proportional to 1,354,863.26, 1,869,713.92 and 743,020.32 is: 1,025,369.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,863.26 : 1,869,713.92 = 743,020.32 : x
  2. Step 2: Convert to fraction form
    1,354,863.26/1,869,713.92 = 743,020.32/x
  3. Step 3: Cross multiply
    1,354,863.26x = 1,869,713.92 × 743,020.32
  4. Step 4: Simplify right side
    1,354,863.26x = 1,389,235,433,289.30
  5. Step 5: Solve for x
    x = 1,389,235,433,289.30/1,354,863.26
  6. Step 6: Final answer
    x = 1,025,369.48

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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.