Home / 831,512.57-1,147,487.45-449,539.25

Finding the Fourth Proportional to 831,512.57, 1,147,487.45 and 449,539.25

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Solution

The fourth proportional to 831,512.57, 1,147,487.45 and 449,539.25 is: 620,364.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,512.57 : 1,147,487.45 = 449,539.25 : x
  2. Step 2: Convert to fraction form
    831,512.57/1,147,487.45 = 449,539.25/x
  3. Step 3: Cross multiply
    831,512.57x = 1,147,487.45 × 449,539.25
  4. Step 4: Simplify right side
    831,512.57x = 515,840,639,672.28
  5. Step 5: Solve for x
    x = 515,840,639,672.28/831,512.57
  6. Step 6: Final answer
    x = 620,364.22

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Double scale
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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.