Home / 1,318,712.80-1,978,069.20-862,067.20

Finding the Fourth Proportional to 1,318,712.80, 1,978,069.20 and 862,067.20

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Solution

The fourth proportional to 1,318,712.80, 1,978,069.20 and 862,067.20 is: 1,293,100.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,712.80 : 1,978,069.20 = 862,067.20 : x
  2. Step 2: Convert to fraction form
    1,318,712.80/1,978,069.20 = 862,067.20/x
  3. Step 3: Cross multiply
    1,318,712.80x = 1,978,069.20 × 862,067.20
  4. Step 4: Simplify right side
    1,318,712.80x = 1,705,228,576,650.24
  5. Step 5: Solve for x
    x = 1,705,228,576,650.24/1,318,712.80
  6. Step 6: Final answer
    x = 1,293,100.80

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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.