Home / 1,311,865.25-1,809,755.50-767,667.21

Finding the Fourth Proportional to 1,311,865.25, 1,809,755.50 and 767,667.21

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Solution

The fourth proportional to 1,311,865.25, 1,809,755.50 and 767,667.21 is: 1,059,018.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,865.25 : 1,809,755.50 = 767,667.21 : x
  2. Step 2: Convert to fraction form
    1,311,865.25/1,809,755.50 = 767,667.21/x
  3. Step 3: Cross multiply
    1,311,865.25x = 1,809,755.50 × 767,667.21
  4. Step 4: Simplify right side
    1,311,865.25x = 1,389,289,955,467.16
  5. Step 5: Solve for x
    x = 1,389,289,955,467.16/1,311,865.25
  6. Step 6: Final answer
    x = 1,059,018.79

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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.