Finding the Fourth Proportional to 813,063.92, 1,121,990.41 and 445,538.87
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Solution
The fourth proportional to 813,063.92, 1,121,990.41 and 445,538.87 is: 614,822.93
Step by Step Solution
- Step 1: Write the proportion equation
813,063.92 : 1,121,990.41 = 445,538.87 : x - Step 2: Convert to fraction form
813,063.92/1,121,990.41 = 445,538.87/x - Step 3: Cross multiply
813,063.92x = 1,121,990.41 × 445,538.87 - Step 4: Simplify right side
813,063.92x = 499,890,339,422.24 - Step 5: Solve for x
x = 499,890,339,422.24/813,063.92 - Step 6: Final answer
x = 614,822.93
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1.5x scale
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.