Home / 1,220,803.85-1,831,205.78-1,040,400.65

Finding the Fourth Proportional to 1,220,803.85, 1,831,205.78 and 1,040,400.65

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Solution

The fourth proportional to 1,220,803.85, 1,831,205.78 and 1,040,400.65 is: 1,560,600.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,803.85 : 1,831,205.78 = 1,040,400.65 : x
  2. Step 2: Convert to fraction form
    1,220,803.85/1,831,205.78 = 1,040,400.65/x
  3. Step 3: Cross multiply
    1,220,803.85x = 1,831,205.78 × 1,040,400.65
  4. Step 4: Simplify right side
    1,220,803.85x = 1,905,187,678,593.75
  5. Step 5: Solve for x
    x = 1,905,187,678,593.75/1,220,803.85
  6. Step 6: Final answer
    x = 1,560,600.98

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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.