Finding the Fourth Proportional to 910,900.40, 1,364,163.60 and 489,246.80
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Solution
The fourth proportional to 910,900.40, 1,364,163.60 and 489,246.80 is: 732,695.56
Step by Step Solution
- Step 1: Write the proportion equation
910,900.40 : 1,364,163.60 = 489,246.80 : x - Step 2: Convert to fraction form
910,900.40/1,364,163.60 = 489,246.80/x - Step 3: Cross multiply
910,900.40x = 1,364,163.60 × 489,246.80 - Step 4: Simplify right side
910,900.40x = 667,412,675,976.48 - Step 5: Solve for x
x = 667,412,675,976.48/910,900.40 - Step 6: Final answer
x = 732,695.56
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1.5x scale
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.