Home / 1,286,665.35-1,775,811.06-713,890.05

Finding the Fourth Proportional to 1,286,665.35, 1,775,811.06 and 713,890.05

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Solution

The fourth proportional to 1,286,665.35, 1,775,811.06 and 713,890.05 is: 985,286.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,665.35 : 1,775,811.06 = 713,890.05 : x
  2. Step 2: Convert to fraction form
    1,286,665.35/1,775,811.06 = 713,890.05/x
  3. Step 3: Cross multiply
    1,286,665.35x = 1,775,811.06 × 713,890.05
  4. Step 4: Simplify right side
    1,286,665.35x = 1,267,733,846,413.95
  5. Step 5: Solve for x
    x = 1,267,733,846,413.95/1,286,665.35
  6. Step 6: Final answer
    x = 985,286.38

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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.