Home / 1,179,840.80-1,770,020.40-380,986.40

Finding the Fourth Proportional to 1,179,840.80, 1,770,020.40 and 380,986.40

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Solution

The fourth proportional to 1,179,840.80, 1,770,020.40 and 380,986.40 is: 571,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,840.80 : 1,770,020.40 = 380,986.40 : x
  2. Step 2: Convert to fraction form
    1,179,840.80/1,770,020.40 = 380,986.40/x
  3. Step 3: Cross multiply
    1,179,840.80x = 1,770,020.40 × 380,986.40
  4. Step 4: Simplify right side
    1,179,840.80x = 674,353,700,122.56
  5. Step 5: Solve for x
    x = 674,353,700,122.56/1,179,840.80
  6. Step 6: Final answer
    x = 571,563.30

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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.