Finding the Fourth Proportional to 717,069.21, 989,517.95 and 394,716.35
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Solution
The fourth proportional to 717,069.21, 989,517.95 and 394,716.35 is: 544,687.88
Step by Step Solution
- Step 1: Write the proportion equation
717,069.21 : 989,517.95 = 394,716.35 : x - Step 2: Convert to fraction form
717,069.21/989,517.95 = 394,716.35/x - Step 3: Cross multiply
717,069.21x = 989,517.95 × 394,716.35 - Step 4: Simplify right side
717,069.21x = 390,578,906,562.31 - Step 5: Solve for x
x = 390,578,906,562.31/717,069.21 - Step 6: Final answer
x = 544,687.88
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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.