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Finding the Fourth Proportional to 1,278,726.92, 1,764,517.52 and 705,730.09

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Solution

The fourth proportional to 1,278,726.92, 1,764,517.52 and 705,730.09 is: 973,838.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,726.92 : 1,764,517.52 = 705,730.09 : x
  2. Step 2: Convert to fraction form
    1,278,726.92/1,764,517.52 = 705,730.09/x
  3. Step 3: Cross multiply
    1,278,726.92x = 1,764,517.52 × 705,730.09
  4. Step 4: Simplify right side
    1,278,726.92x = 1,245,273,100,256.23
  5. Step 5: Solve for x
    x = 1,245,273,100,256.23/1,278,726.92
  6. Step 6: Final answer
    x = 973,838.18

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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.