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Finding the Fourth Proportional to 487,270.80, 730,906.20 and 443,725.20

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Solution

The fourth proportional to 487,270.80, 730,906.20 and 443,725.20 is: 665,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,270.80 : 730,906.20 = 443,725.20 : x
  2. Step 2: Convert to fraction form
    487,270.80/730,906.20 = 443,725.20/x
  3. Step 3: Cross multiply
    487,270.80x = 730,906.20 × 443,725.20
  4. Step 4: Simplify right side
    487,270.80x = 324,321,499,776.24
  5. Step 5: Solve for x
    x = 324,321,499,776.24/487,270.80
  6. Step 6: Final answer
    x = 665,587.80

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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.