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Finding the Fourth Proportional to 587,811.20, 880,550.40 and 321,180.80

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Solution

The fourth proportional to 587,811.20, 880,550.40 and 321,180.80 is: 481,133.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,811.20 : 880,550.40 = 321,180.80 : x
  2. Step 2: Convert to fraction form
    587,811.20/880,550.40 = 321,180.80/x
  3. Step 3: Cross multiply
    587,811.20x = 880,550.40 × 321,180.80
  4. Step 4: Simplify right side
    587,811.20x = 282,815,881,912.32
  5. Step 5: Solve for x
    x = 282,815,881,912.32/587,811.20
  6. Step 6: Final answer
    x = 481,133.88

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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.