Finding the Fourth Proportional to 718,405.41, 991,444.41 and 396,115.05
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Solution
The fourth proportional to 718,405.41, 991,444.41 and 396,115.05 is: 546,663.55
Step by Step Solution
- Step 1: Write the proportion equation
718,405.41 : 991,444.41 = 396,115.05 : x - Step 2: Convert to fraction form
718,405.41/991,444.41 = 396,115.05/x - Step 3: Cross multiply
718,405.41x = 991,444.41 × 396,115.05 - Step 4: Simplify right side
718,405.41x = 392,726,052,039.37 - Step 5: Solve for x
x = 392,726,052,039.37/718,405.41 - Step 6: Final answer
x = 546,663.55
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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.