Home / 1,311,876.41-1,809,770.85-767,678.41

Finding the Fourth Proportional to 1,311,876.41, 1,809,770.85 and 767,678.41

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Solution

The fourth proportional to 1,311,876.41, 1,809,770.85 and 767,678.41 is: 1,059,034.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,876.41 : 1,809,770.85 = 767,678.41 : x
  2. Step 2: Convert to fraction form
    1,311,876.41/1,809,770.85 = 767,678.41/x
  3. Step 3: Cross multiply
    1,311,876.41x = 1,809,770.85 × 767,678.41
  4. Step 4: Simplify right side
    1,311,876.41x = 1,389,322,010,854.56
  5. Step 5: Solve for x
    x = 1,389,322,010,854.56/1,311,876.41
  6. Step 6: Final answer
    x = 1,059,034.22

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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.