Finding the Fourth Proportional to 644,091.21, 887,383.62 and 498,395.97
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Solution
The fourth proportional to 644,091.21, 887,383.62 and 498,395.97 is: 686,654.95
Step by Step Solution
- Step 1: Write the proportion equation
644,091.21 : 887,383.62 = 498,395.97 : x - Step 2: Convert to fraction form
644,091.21/887,383.62 = 498,395.97/x - Step 3: Cross multiply
644,091.21x = 887,383.62 × 498,395.97 - Step 4: Simplify right side
644,091.21x = 442,268,420,052.01 - Step 5: Solve for x
x = 442,268,420,052.01/644,091.21 - Step 6: Final answer
x = 686,654.95
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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.