Home / 831,459.15-1,147,415.31-449,485.92

Finding the Fourth Proportional to 831,459.15, 1,147,415.31 and 449,485.92

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Solution

The fourth proportional to 831,459.15, 1,147,415.31 and 449,485.92 is: 620,291.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,459.15 : 1,147,415.31 = 449,485.92 : x
  2. Step 2: Convert to fraction form
    831,459.15/1,147,415.31 = 449,485.92/x
  3. Step 3: Cross multiply
    831,459.15x = 1,147,415.31 × 449,485.92
  4. Step 4: Simplify right side
    831,459.15x = 515,747,026,237.44
  5. Step 5: Solve for x
    x = 515,747,026,237.44/831,459.15
  6. Step 6: Final answer
    x = 620,291.48

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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.