Home / 831,433.72-1,147,378.08-449,461.21

Finding the Fourth Proportional to 831,433.72, 1,147,378.08 and 449,461.21

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Solution

The fourth proportional to 831,433.72, 1,147,378.08 and 449,461.21 is: 620,256.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,433.72 : 1,147,378.08 = 449,461.21 : x
  2. Step 2: Convert to fraction form
    831,433.72/1,147,378.08 = 449,461.21/x
  3. Step 3: Cross multiply
    831,433.72x = 1,147,378.08 × 449,461.21
  4. Step 4: Simplify right side
    831,433.72x = 515,701,940,164.28
  5. Step 5: Solve for x
    x = 515,701,940,164.28/831,433.72
  6. Step 6: Final answer
    x = 620,256.22

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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.