Finding the Fourth Proportional to 543,629.70, 815,444.55 and 319,097.70
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Solution
The fourth proportional to 543,629.70, 815,444.55 and 319,097.70 is: 478,646.55
Step by Step Solution
- Step 1: Write the proportion equation
543,629.70 : 815,444.55 = 319,097.70 : x - Step 2: Convert to fraction form
543,629.70/815,444.55 = 319,097.70/x - Step 3: Cross multiply
543,629.70x = 815,444.55 × 319,097.70 - Step 4: Simplify right side
543,629.70x = 260,206,480,382.54 - Step 5: Solve for x
x = 260,206,480,382.54/543,629.70 - Step 6: Final answer
x = 478,646.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.