Home / 1,040,079.80-1,560,119.70-911,516.60

Finding the Fourth Proportional to 1,040,079.80, 1,560,119.70 and 911,516.60

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Solution

The fourth proportional to 1,040,079.80, 1,560,119.70 and 911,516.60 is: 1,367,274.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,079.80 : 1,560,119.70 = 911,516.60 : x
  2. Step 2: Convert to fraction form
    1,040,079.80/1,560,119.70 = 911,516.60/x
  3. Step 3: Cross multiply
    1,040,079.80x = 1,560,119.70 × 911,516.60
  4. Step 4: Simplify right side
    1,040,079.80x = 1,422,075,004,537.02
  5. Step 5: Solve for x
    x = 1,422,075,004,537.02/1,040,079.80
  6. Step 6: Final answer
    x = 1,367,274.90

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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.