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Finding the Fourth Proportional to 989,260.80, 1,483,804.80 and 324,412.80

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Solution

The fourth proportional to 989,260.80, 1,483,804.80 and 324,412.80 is: 486,590.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,260.80 : 1,483,804.80 = 324,412.80 : x
  2. Step 2: Convert to fraction form
    989,260.80/1,483,804.80 = 324,412.80/x
  3. Step 3: Cross multiply
    989,260.80x = 1,483,804.80 × 324,412.80
  4. Step 4: Simplify right side
    989,260.80x = 481,365,269,821.44
  5. Step 5: Solve for x
    x = 481,365,269,821.44/989,260.80
  6. Step 6: Final answer
    x = 486,590.87

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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.