Home / 1,121,740.80-1,682,611.20-679,372.80

Finding the Fourth Proportional to 1,121,740.80, 1,682,611.20 and 679,372.80

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Solution

The fourth proportional to 1,121,740.80, 1,682,611.20 and 679,372.80 is: 1,019,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,740.80 : 1,682,611.20 = 679,372.80 : x
  2. Step 2: Convert to fraction form
    1,121,740.80/1,682,611.20 = 679,372.80/x
  3. Step 3: Cross multiply
    1,121,740.80x = 1,682,611.20 × 679,372.80
  4. Step 4: Simplify right side
    1,121,740.80x = 1,143,120,282,255.36
  5. Step 5: Solve for x
    x = 1,143,120,282,255.36/1,121,740.80
  6. Step 6: Final answer
    x = 1,019,059.20

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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.