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Finding the Fourth Proportional to 609,731.20, 915,633.60 and 452,137.60

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Solution

The fourth proportional to 609,731.20, 915,633.60 and 452,137.60 is: 678,975.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,731.20 : 915,633.60 = 452,137.60 : x
  2. Step 2: Convert to fraction form
    609,731.20/915,633.60 = 452,137.60/x
  3. Step 3: Cross multiply
    609,731.20x = 915,633.60 × 452,137.60
  4. Step 4: Simplify right side
    609,731.20x = 413,992,378,383.36
  5. Step 5: Solve for x
    x = 413,992,378,383.36/609,731.20
  6. Step 6: Final answer
    x = 678,975.22

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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.