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Finding the Fourth Proportional to 587,636.40, 880,840.20 and 320,986.80

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Solution

The fourth proportional to 587,636.40, 880,840.20 and 320,986.80 is: 481,144.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,636.40 : 880,840.20 = 320,986.80 : x
  2. Step 2: Convert to fraction form
    587,636.40/880,840.20 = 320,986.80/x
  3. Step 3: Cross multiply
    587,636.40x = 880,840.20 × 320,986.80
  4. Step 4: Simplify right side
    587,636.40x = 282,738,077,109.36
  5. Step 5: Solve for x
    x = 282,738,077,109.36/587,636.40
  6. Step 6: Final answer
    x = 481,144.59

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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.