Home / 860,911.89-1,291,367.84-313,845.33

Finding the Fourth Proportional to 860,911.89, 1,291,367.84 and 313,845.33

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Solution

The fourth proportional to 860,911.89, 1,291,367.84 and 313,845.33 is: 470,768.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,911.89 : 1,291,367.84 = 313,845.33 : x
  2. Step 2: Convert to fraction form
    860,911.89/1,291,367.84 = 313,845.33/x
  3. Step 3: Cross multiply
    860,911.89x = 1,291,367.84 × 313,845.33
  4. Step 4: Simplify right side
    860,911.89x = 405,289,769,169.59
  5. Step 5: Solve for x
    x = 405,289,769,169.59/860,911.89
  6. Step 6: Final answer
    x = 470,768.00

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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.