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Finding the Fourth Proportional to 565,399.20, 849,481.20 and 425,431.20

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Solution

The fourth proportional to 565,399.20, 849,481.20 and 425,431.20 is: 639,186.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,399.20 : 849,481.20 = 425,431.20 : x
  2. Step 2: Convert to fraction form
    565,399.20/849,481.20 = 425,431.20/x
  3. Step 3: Cross multiply
    565,399.20x = 849,481.20 × 425,431.20
  4. Step 4: Simplify right side
    565,399.20x = 361,395,806,293.44
  5. Step 5: Solve for x
    x = 361,395,806,293.44/565,399.20
  6. Step 6: Final answer
    x = 639,186.98

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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.