Home / 638,424.73-881,028.80-351,938.53

Finding the Fourth Proportional to 638,424.73, 881,028.80 and 351,938.53

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Solution

The fourth proportional to 638,424.73, 881,028.80 and 351,938.53 is: 485,676.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,424.73 : 881,028.80 = 351,938.53 : x
  2. Step 2: Convert to fraction form
    638,424.73/881,028.80 = 351,938.53/x
  3. Step 3: Cross multiply
    638,424.73x = 881,028.80 × 351,938.53
  4. Step 4: Simplify right side
    638,424.73x = 310,067,978,999.97
  5. Step 5: Solve for x
    x = 310,067,978,999.97/638,424.73
  6. Step 6: Final answer
    x = 485,676.64

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Why These Related Problems?

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