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Finding the Fourth Proportional to 609,729.20, 915,630.60 and 452,135.60

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Solution

The fourth proportional to 609,729.20, 915,630.60 and 452,135.60 is: 678,972.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,729.20 : 915,630.60 = 452,135.60 : x
  2. Step 2: Convert to fraction form
    609,729.20/915,630.60 = 452,135.60/x
  3. Step 3: Cross multiply
    609,729.20x = 915,630.60 × 452,135.60
  4. Step 4: Simplify right side
    609,729.20x = 413,989,190,709.36
  5. Step 5: Solve for x
    x = 413,989,190,709.36/609,729.20
  6. Step 6: Final answer
    x = 678,972.22

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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.