Home / 1,240,813.80-1,858,110.30-991,981.80

Finding the Fourth Proportional to 1,240,813.80, 1,858,110.30 and 991,981.80

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Solution

The fourth proportional to 1,240,813.80, 1,858,110.30 and 991,981.80 is: 1,485,486.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,813.80 : 1,858,110.30 = 991,981.80 : x
  2. Step 2: Convert to fraction form
    1,240,813.80/1,858,110.30 = 991,981.80/x
  3. Step 3: Cross multiply
    1,240,813.80x = 1,858,110.30 × 991,981.80
  4. Step 4: Simplify right side
    1,240,813.80x = 1,843,211,599,992.54
  5. Step 5: Solve for x
    x = 1,843,211,599,992.54/1,240,813.80
  6. Step 6: Final answer
    x = 1,485,486.06

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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.