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Finding the Fourth Proportional to 452,489.40, 678,287.70 and 252,905.40

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Solution

The fourth proportional to 452,489.40, 678,287.70 and 252,905.40 is: 379,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,489.40 : 678,287.70 = 252,905.40 : x
  2. Step 2: Convert to fraction form
    452,489.40/678,287.70 = 252,905.40/x
  3. Step 3: Cross multiply
    452,489.40x = 678,287.70 × 252,905.40
  4. Step 4: Simplify right side
    452,489.40x = 171,542,622,083.58
  5. Step 5: Solve for x
    x = 171,542,622,083.58/452,489.40
  6. Step 6: Final answer
    x = 379,108.60

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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.