Home / 445,112.37-666,907.85-318,103.72

Finding the Fourth Proportional to 445,112.37, 666,907.85 and 318,103.72

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Solution

The fourth proportional to 445,112.37, 666,907.85 and 318,103.72 is: 476,611.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,112.37 : 666,907.85 = 318,103.72 : x
  2. Step 2: Convert to fraction form
    445,112.37/666,907.85 = 318,103.72/x
  3. Step 3: Cross multiply
    445,112.37x = 666,907.85 × 318,103.72
  4. Step 4: Simplify right side
    445,112.37x = 212,145,867,110.19
  5. Step 5: Solve for x
    x = 212,145,867,110.19/445,112.37
  6. Step 6: Final answer
    x = 476,611.93

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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.