Finding the Fourth Proportional to 831,305.81, 1,147,201.33 and 449,332.59
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Solution
The fourth proportional to 831,305.81, 1,147,201.33 and 449,332.59 is: 620,078.60
Step by Step Solution
- Step 1: Write the proportion equation
831,305.81 : 1,147,201.33 = 449,332.59 : x - Step 2: Convert to fraction form
831,305.81/1,147,201.33 = 449,332.59/x - Step 3: Cross multiply
831,305.81x = 1,147,201.33 × 449,332.59 - Step 4: Simplify right side
831,305.81x = 515,474,945,655.01 - Step 5: Solve for x
x = 515,474,945,655.01/831,305.81 - Step 6: Final answer
x = 620,078.60
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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.