Home / 831,429.72-1,147,372.56-449,457.21

Finding the Fourth Proportional to 831,429.72, 1,147,372.56 and 449,457.21

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Solution

The fourth proportional to 831,429.72, 1,147,372.56 and 449,457.21 is: 620,250.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,429.72 : 1,147,372.56 = 449,457.21 : x
  2. Step 2: Convert to fraction form
    831,429.72/1,147,372.56 = 449,457.21/x
  3. Step 3: Cross multiply
    831,429.72x = 1,147,372.56 × 449,457.21
  4. Step 4: Simplify right side
    831,429.72x = 515,694,869,648.16
  5. Step 5: Solve for x
    x = 515,694,869,648.16/831,429.72
  6. Step 6: Final answer
    x = 620,250.70

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1.5x scale

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.