Finding the Fourth Proportional to 611,394.01, 843,843.42 and 390,489.39
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Solution
The fourth proportional to 611,394.01, 843,843.42 and 390,489.39 is: 538,951.80
Step by Step Solution
- Step 1: Write the proportion equation
611,394.01 : 843,843.42 = 390,489.39 : x - Step 2: Convert to fraction form
611,394.01/843,843.42 = 390,489.39/x - Step 3: Cross multiply
611,394.01x = 843,843.42 × 390,489.39 - Step 4: Simplify right side
611,394.01x = 329,511,902,331.31 - Step 5: Solve for x
x = 329,511,902,331.31/611,394.01 - Step 6: Final answer
x = 538,951.80
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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.