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Finding the Fourth Proportional to 627,814.40, 941,721.60 and 449,945.60

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Solution

The fourth proportional to 627,814.40, 941,721.60 and 449,945.60 is: 674,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,814.40 : 941,721.60 = 449,945.60 : x
  2. Step 2: Convert to fraction form
    627,814.40/941,721.60 = 449,945.60/x
  3. Step 3: Cross multiply
    627,814.40x = 941,721.60 × 449,945.60
  4. Step 4: Simplify right side
    627,814.40x = 423,723,490,344.96
  5. Step 5: Solve for x
    x = 423,723,490,344.96/627,814.40
  6. Step 6: Final answer
    x = 674,918.40

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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.