Home / 1,286,638.80-1,775,774.46-713,863.50

Finding the Fourth Proportional to 1,286,638.80, 1,775,774.46 and 713,863.50

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Solution

The fourth proportional to 1,286,638.80, 1,775,774.46 and 713,863.50 is: 985,249.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,638.80 : 1,775,774.46 = 713,863.50 : x
  2. Step 2: Convert to fraction form
    1,286,638.80/1,775,774.46 = 713,863.50/x
  3. Step 3: Cross multiply
    1,286,638.80x = 1,775,774.46 × 713,863.50
  4. Step 4: Simplify right side
    1,286,638.80x = 1,267,660,571,226.21
  5. Step 5: Solve for x
    x = 1,267,660,571,226.21/1,286,638.80
  6. Step 6: Final answer
    x = 985,249.76

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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.