Finding the Fourth Proportional to 712,258.42, 982,877.68 and 389,906.17
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Solution
The fourth proportional to 712,258.42, 982,877.68 and 389,906.17 is: 538,049.20
Step by Step Solution
- Step 1: Write the proportion equation
712,258.42 : 982,877.68 = 389,906.17 : x - Step 2: Convert to fraction form
712,258.42/982,877.68 = 389,906.17/x - Step 3: Cross multiply
712,258.42x = 982,877.68 × 389,906.17 - Step 4: Simplify right side
712,258.42x = 383,230,071,787.29 - Step 5: Solve for x
x = 383,230,071,787.29/712,258.42 - Step 6: Final answer
x = 538,049.20
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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.