Home / 1,286,974.71-1,776,072.56-777,578.67

Finding the Fourth Proportional to 1,286,974.71, 1,776,072.56 and 777,578.67

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Solution

The fourth proportional to 1,286,974.71, 1,776,072.56 and 777,578.67 is: 1,073,087.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,974.71 : 1,776,072.56 = 777,578.67 : x
  2. Step 2: Convert to fraction form
    1,286,974.71/1,776,072.56 = 777,578.67/x
  3. Step 3: Cross multiply
    1,286,974.71x = 1,776,072.56 × 777,578.67
  4. Step 4: Simplify right side
    1,286,974.71x = 1,381,036,135,140.40
  5. Step 5: Solve for x
    x = 1,381,036,135,140.40/1,286,974.71
  6. Step 6: Final answer
    x = 1,073,087.24

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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.