Home / 1,378,385.19-1,901,892.83-805,314.65

Finding the Fourth Proportional to 1,378,385.19, 1,901,892.83 and 805,314.65

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Solution

The fourth proportional to 1,378,385.19, 1,901,892.83 and 805,314.65 is: 1,111,171.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,385.19 : 1,901,892.83 = 805,314.65 : x
  2. Step 2: Convert to fraction form
    1,378,385.19/1,901,892.83 = 805,314.65/x
  3. Step 3: Cross multiply
    1,378,385.19x = 1,901,892.83 × 805,314.65
  4. Step 4: Simplify right side
    1,378,385.19x = 1,531,622,145,192.92
  5. Step 5: Solve for x
    x = 1,531,622,145,192.92/1,378,385.19
  6. Step 6: Final answer
    x = 1,111,171.36

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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.