Home / 1,230,190.80-1,844,940.60-389,000.40

Finding the Fourth Proportional to 1,230,190.80, 1,844,940.60 and 389,000.40

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Solution

The fourth proportional to 1,230,190.80, 1,844,940.60 and 389,000.40 is: 583,391.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,190.80 : 1,844,940.60 = 389,000.40 : x
  2. Step 2: Convert to fraction form
    1,230,190.80/1,844,940.60 = 389,000.40/x
  3. Step 3: Cross multiply
    1,230,190.80x = 1,844,940.60 × 389,000.40
  4. Step 4: Simplify right side
    1,230,190.80x = 717,682,631,376.24
  5. Step 5: Solve for x
    x = 717,682,631,376.24/1,230,190.80
  6. Step 6: Final answer
    x = 583,391.32

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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.