Home / 858,890.20-1,288,481.10-259,846.60

Finding the Fourth Proportional to 858,890.20, 1,288,481.10 and 259,846.60

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Solution

The fourth proportional to 858,890.20, 1,288,481.10 and 259,846.60 is: 389,814.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,890.20 : 1,288,481.10 = 259,846.60 : x
  2. Step 2: Convert to fraction form
    858,890.20/1,288,481.10 = 259,846.60/x
  3. Step 3: Cross multiply
    858,890.20x = 1,288,481.10 × 259,846.60
  4. Step 4: Simplify right side
    858,890.20x = 334,807,432,999.26
  5. Step 5: Solve for x
    x = 334,807,432,999.26/858,890.20
  6. Step 6: Final answer
    x = 389,814.01

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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.