Home / 1,259,399.80-1,889,099.70-511,982.20

Finding the Fourth Proportional to 1,259,399.80, 1,889,099.70 and 511,982.20

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Solution

The fourth proportional to 1,259,399.80, 1,889,099.70 and 511,982.20 is: 767,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,399.80 : 1,889,099.70 = 511,982.20 : x
  2. Step 2: Convert to fraction form
    1,259,399.80/1,889,099.70 = 511,982.20/x
  3. Step 3: Cross multiply
    1,259,399.80x = 1,889,099.70 × 511,982.20
  4. Step 4: Simplify right side
    1,259,399.80x = 967,185,420,425.34
  5. Step 5: Solve for x
    x = 967,185,420,425.34/1,259,399.80
  6. Step 6: Final answer
    x = 767,973.30

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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.