Home / 831,319.46-1,147,220.21-449,346.24

Finding the Fourth Proportional to 831,319.46, 1,147,220.21 and 449,346.24

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Solution

The fourth proportional to 831,319.46, 1,147,220.21 and 449,346.24 is: 620,097.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,319.46 : 1,147,220.21 = 449,346.24 : x
  2. Step 2: Convert to fraction form
    831,319.46/1,147,220.21 = 449,346.24/x
  3. Step 3: Cross multiply
    831,319.46x = 1,147,220.21 × 449,346.24
  4. Step 4: Simplify right side
    831,319.46x = 515,499,089,745.52
  5. Step 5: Solve for x
    x = 515,499,089,745.52/831,319.46
  6. Step 6: Final answer
    x = 620,097.47

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Double scale
Find fourth proportional to 831,320.46, 1,147,221.59 and 449,347.24
Similar ratio
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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.