Home / 856,922.85-1,285,388.87-257,879.93

Finding the Fourth Proportional to 856,922.85, 1,285,388.87 and 257,879.93

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Solution

The fourth proportional to 856,922.85, 1,285,388.87 and 257,879.93 is: 386,821.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,922.85 : 1,285,388.87 = 257,879.93 : x
  2. Step 2: Convert to fraction form
    856,922.85/1,285,388.87 = 257,879.93/x
  3. Step 3: Cross multiply
    856,922.85x = 1,285,388.87 × 257,879.93
  4. Step 4: Simplify right side
    856,922.85x = 331,475,984,102.04
  5. Step 5: Solve for x
    x = 331,475,984,102.04/856,922.85
  6. Step 6: Final answer
    x = 386,821.27

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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.