Home / 1,230,189.80-1,844,939.10-388,999.40

Finding the Fourth Proportional to 1,230,189.80, 1,844,939.10 and 388,999.40

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Solution

The fourth proportional to 1,230,189.80, 1,844,939.10 and 388,999.40 is: 583,389.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,189.80 : 1,844,939.10 = 388,999.40 : x
  2. Step 2: Convert to fraction form
    1,230,189.80/1,844,939.10 = 388,999.40/x
  3. Step 3: Cross multiply
    1,230,189.80x = 1,844,939.10 × 388,999.40
  4. Step 4: Simplify right side
    1,230,189.80x = 717,680,202,936.54
  5. Step 5: Solve for x
    x = 717,680,202,936.54/1,230,189.80
  6. Step 6: Final answer
    x = 583,389.82

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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.