Home / 860,942.10-1,291,485.22-261,907.80

Finding the Fourth Proportional to 860,942.10, 1,291,485.22 and 261,907.80

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Solution

The fourth proportional to 860,942.10, 1,291,485.22 and 261,907.80 is: 392,883.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,942.10 : 1,291,485.22 = 261,907.80 : x
  2. Step 2: Convert to fraction form
    860,942.10/1,291,485.22 = 261,907.80/x
  3. Step 3: Cross multiply
    860,942.10x = 1,291,485.22 × 261,907.80
  4. Step 4: Simplify right side
    860,942.10x = 338,250,052,702.72
  5. Step 5: Solve for x
    x = 338,250,052,702.72/860,942.10
  6. Step 6: Final answer
    x = 392,883.62

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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.