Home / 7,940,686.80-11,879,537.40-6,887,427.60

Finding the Fourth Proportional to 7,940,686.80, 11,879,537.40 and 6,887,427.60

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Solution

The fourth proportional to 7,940,686.80, 11,879,537.40 and 6,887,427.60 is: 10,303,825.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940,686.80 : 11,879,537.40 = 6,887,427.60 : x
  2. Step 2: Convert to fraction form
    7,940,686.80/11,879,537.40 = 6,887,427.60/x
  3. Step 3: Cross multiply
    7,940,686.80x = 11,879,537.40 × 6,887,427.60
  4. Step 4: Simplify right side
    7,940,686.80x = 81,819,453,763,992.23
  5. Step 5: Solve for x
    x = 81,819,453,763,992.23/7,940,686.80
  6. Step 6: Final answer
    x = 10,303,825.83

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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.