Finding the Fourth Proportional to 718,750.60, 991,882.74 and 396,474.28
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Solution
The fourth proportional to 718,750.60, 991,882.74 and 396,474.28 is: 547,138.32
Step by Step Solution
- Step 1: Write the proportion equation
718,750.60 : 991,882.74 = 396,474.28 : x - Step 2: Convert to fraction form
718,750.60/991,882.74 = 396,474.28/x - Step 3: Cross multiply
718,750.60x = 991,882.74 × 396,474.28 - Step 4: Simplify right side
718,750.60x = 393,255,995,185.93 - Step 5: Solve for x
x = 393,255,995,185.93/718,750.60 - Step 6: Final answer
x = 547,138.32
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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.