Finding the Fourth Proportional to 712,197.63, 982,845.09 and 389,902.68
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Solution
The fourth proportional to 712,197.63, 982,845.09 and 389,902.68 is: 538,072.47
Step by Step Solution
- Step 1: Write the proportion equation
712,197.63 : 982,845.09 = 389,902.68 : x - Step 2: Convert to fraction form
712,197.63/982,845.09 = 389,902.68/x - Step 3: Cross multiply
712,197.63x = 982,845.09 × 389,902.68 - Step 4: Simplify right side
712,197.63x = 383,213,934,615.84 - Step 5: Solve for x
x = 383,213,934,615.84/712,197.63 - Step 6: Final answer
x = 538,072.47
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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.