Home / 1,008,145.80-1,512,218.70-931,163.40

Finding the Fourth Proportional to 1,008,145.80, 1,512,218.70 and 931,163.40

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Solution

The fourth proportional to 1,008,145.80, 1,512,218.70 and 931,163.40 is: 1,396,745.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,145.80 : 1,512,218.70 = 931,163.40 : x
  2. Step 2: Convert to fraction form
    1,008,145.80/1,512,218.70 = 931,163.40/x
  3. Step 3: Cross multiply
    1,008,145.80x = 1,512,218.70 × 931,163.40
  4. Step 4: Simplify right side
    1,008,145.80x = 1,408,122,706,235.58
  5. Step 5: Solve for x
    x = 1,408,122,706,235.58/1,008,145.80
  6. Step 6: Final answer
    x = 1,396,745.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.