Home / 1,378,384.44-1,901,891.79-805,313.90

Finding the Fourth Proportional to 1,378,384.44, 1,901,891.79 and 805,313.90

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Solution

The fourth proportional to 1,378,384.44, 1,901,891.79 and 805,313.90 is: 1,111,170.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,384.44 : 1,901,891.79 = 805,313.90 : x
  2. Step 2: Convert to fraction form
    1,378,384.44/1,901,891.79 = 805,313.90/x
  3. Step 3: Cross multiply
    1,378,384.44x = 1,901,891.79 × 805,313.90
  4. Step 4: Simplify right side
    1,378,384.44x = 1,531,619,885,273.42
  5. Step 5: Solve for x
    x = 1,531,619,885,273.42/1,378,384.44
  6. Step 6: Final answer
    x = 1,111,170.32

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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.