Finding the Fourth Proportional to 718,188.68, 991,087.98 and 395,928.74
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Solution
The fourth proportional to 718,188.68, 991,087.98 and 395,928.74 is: 546,374.83
Step by Step Solution
- Step 1: Write the proportion equation
718,188.68 : 991,087.98 = 395,928.74 : x - Step 2: Convert to fraction form
718,188.68/991,087.98 = 395,928.74/x - Step 3: Cross multiply
718,188.68x = 991,087.98 × 395,928.74 - Step 4: Simplify right side
718,188.68x = 392,400,215,150.55 - Step 5: Solve for x
x = 392,400,215,150.55/718,188.68 - Step 6: Final answer
x = 546,374.83
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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.