Finding the Fourth Proportional to 386,414.58, 578,871.30 and 217,419.60
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Solution
The fourth proportional to 386,414.58, 578,871.30 and 217,419.60 is: 325,707.09
Step by Step Solution
- Step 1: Write the proportion equation
386,414.58 : 578,871.30 = 217,419.60 : x - Step 2: Convert to fraction form
386,414.58/578,871.30 = 217,419.60/x - Step 3: Cross multiply
386,414.58x = 578,871.30 × 217,419.60 - Step 4: Simplify right side
386,414.58x = 125,857,966,497.48 - Step 5: Solve for x
x = 125,857,966,497.48/386,414.58 - Step 6: Final answer
x = 325,707.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.