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Finding the Fourth Proportional to 1,292,627.54, 1,936,053.92 and 936,824.78

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Solution

The fourth proportional to 1,292,627.54, 1,936,053.92 and 936,824.78 is: 1,403,144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,627.54 : 1,936,053.92 = 936,824.78 : x
  2. Step 2: Convert to fraction form
    1,292,627.54/1,936,053.92 = 936,824.78/x
  3. Step 3: Cross multiply
    1,292,627.54x = 1,936,053.92 × 936,824.78
  4. Step 4: Simplify right side
    1,292,627.54x = 1,813,743,287,672.14
  5. Step 5: Solve for x
    x = 1,813,743,287,672.14/1,292,627.54
  6. Step 6: Final answer
    x = 1,403,144.55

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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.