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Finding the Fourth Proportional to 576,747.20, 865,995.60 and 443,777.60

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Solution

The fourth proportional to 576,747.20, 865,995.60 and 443,777.60 is: 666,339.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,747.20 : 865,995.60 = 443,777.60 : x
  2. Step 2: Convert to fraction form
    576,747.20/865,995.60 = 443,777.60/x
  3. Step 3: Cross multiply
    576,747.20x = 865,995.60 × 443,777.60
  4. Step 4: Simplify right side
    576,747.20x = 384,309,448,978.56
  5. Step 5: Solve for x
    x = 384,309,448,978.56/576,747.20
  6. Step 6: Final answer
    x = 666,339.51

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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.