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Finding the Fourth Proportional to 1,787,736.78, 2,467,076.70 and 982,920.78

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Solution

The fourth proportional to 1,787,736.78, 2,467,076.70 and 982,920.78 is: 1,356,430.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,736.78 : 2,467,076.70 = 982,920.78 : x
  2. Step 2: Convert to fraction form
    1,787,736.78/2,467,076.70 = 982,920.78/x
  3. Step 3: Cross multiply
    1,787,736.78x = 2,467,076.70 × 982,920.78
  4. Step 4: Simplify right side
    1,787,736.78x = 2,424,940,954,283.83
  5. Step 5: Solve for x
    x = 2,424,940,954,283.83/1,787,736.78
  6. Step 6: Final answer
    x = 1,356,430.65

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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.