Home / 1,236,679.80-1,855,019.70-987,847.80

Finding the Fourth Proportional to 1,236,679.80, 1,855,019.70 and 987,847.80

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Solution

The fourth proportional to 1,236,679.80, 1,855,019.70 and 987,847.80 is: 1,481,771.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236,679.80 : 1,855,019.70 = 987,847.80 : x
  2. Step 2: Convert to fraction form
    1,236,679.80/1,855,019.70 = 987,847.80/x
  3. Step 3: Cross multiply
    1,236,679.80x = 1,855,019.70 × 987,847.80
  4. Step 4: Simplify right side
    1,236,679.80x = 1,832,477,129,601.66
  5. Step 5: Solve for x
    x = 1,832,477,129,601.66/1,236,679.80
  6. Step 6: Final answer
    x = 1,481,771.70

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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.