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Finding the Fourth Proportional to 587,680.40, 880,906.20 and 321,030.80

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Solution

The fourth proportional to 587,680.40, 880,906.20 and 321,030.80 is: 481,210.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,680.40 : 880,906.20 = 321,030.80 : x
  2. Step 2: Convert to fraction form
    587,680.40/880,906.20 = 321,030.80/x
  3. Step 3: Cross multiply
    587,680.40x = 880,906.20 × 321,030.80
  4. Step 4: Simplify right side
    587,680.40x = 282,798,022,110.96
  5. Step 5: Solve for x
    x = 282,798,022,110.96/587,680.40
  6. Step 6: Final answer
    x = 481,210.57

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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.