Finding the Fourth Proportional to 714,659.31, 986,242.19 and 392,382.99
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Solution
The fourth proportional to 714,659.31, 986,242.19 and 392,382.99 is: 541,495.30
Step by Step Solution
- Step 1: Write the proportion equation
714,659.31 : 986,242.19 = 392,382.99 : x - Step 2: Convert to fraction form
714,659.31/986,242.19 = 392,382.99/x - Step 3: Cross multiply
714,659.31x = 986,242.19 × 392,382.99 - Step 4: Simplify right side
714,659.31x = 386,984,657,414.43 - Step 5: Solve for x
x = 386,984,657,414.43/714,659.31 - Step 6: Final answer
x = 541,495.30
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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.