Home / 860,400.82-1,291,169.76-405,122.27

Finding the Fourth Proportional to 860,400.82, 1,291,169.76 and 405,122.27

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Solution

The fourth proportional to 860,400.82, 1,291,169.76 and 405,122.27 is: 607,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,400.82 : 1,291,169.76 = 405,122.27 : x
  2. Step 2: Convert to fraction form
    860,400.82/1,291,169.76 = 405,122.27/x
  3. Step 3: Cross multiply
    860,400.82x = 1,291,169.76 × 405,122.27
  4. Step 4: Simplify right side
    860,400.82x = 523,081,624,126.56
  5. Step 5: Solve for x
    x = 523,081,624,126.56/860,400.82
  6. Step 6: Final answer
    x = 607,951.10

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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.