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Finding the Fourth Proportional to 806,978, 1,113,629.64 and 449,366.48

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Solution

The fourth proportional to 806,978, 1,113,629.64 and 449,366.48 is: 620,125.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,978 : 1,113,629.64 = 449,366.48 : x
  2. Step 2: Convert to fraction form
    806,978/1,113,629.64 = 449,366.48/x
  3. Step 3: Cross multiply
    806,978x = 1,113,629.64 × 449,366.48
  4. Step 4: Simplify right side
    806,978x = 500,427,831,350.47
  5. Step 5: Solve for x
    x = 500,427,831,350.47/806,978
  6. Step 6: Final answer
    x = 620,125.74

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.