Home / 831,653.28-1,147,682.34-449,679.96

Finding the Fourth Proportional to 831,653.28, 1,147,682.34 and 449,679.96

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Solution

The fourth proportional to 831,653.28, 1,147,682.34 and 449,679.96 is: 620,558.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,653.28 : 1,147,682.34 = 449,679.96 : x
  2. Step 2: Convert to fraction form
    831,653.28/1,147,682.34 = 449,679.96/x
  3. Step 3: Cross multiply
    831,653.28x = 1,147,682.34 × 449,679.96
  4. Step 4: Simplify right side
    831,653.28x = 516,089,748,743.91
  5. Step 5: Solve for x
    x = 516,089,748,743.91/831,653.28
  6. Step 6: Final answer
    x = 620,558.78

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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.