Home / 1,378,712.19-1,901,286.96-919,845.48

Finding the Fourth Proportional to 1,378,712.19, 1,901,286.96 and 919,845.48

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Solution

The fourth proportional to 1,378,712.19, 1,901,286.96 and 919,845.48 is: 1,268,495.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,712.19 : 1,901,286.96 = 919,845.48 : x
  2. Step 2: Convert to fraction form
    1,378,712.19/1,901,286.96 = 919,845.48/x
  3. Step 3: Cross multiply
    1,378,712.19x = 1,901,286.96 × 919,845.48
  4. Step 4: Simplify right side
    1,378,712.19x = 1,748,890,216,338.94
  5. Step 5: Solve for x
    x = 1,748,890,216,338.94/1,378,712.19
  6. Step 6: Final answer
    x = 1,268,495.51

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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.