Finding the Fourth Proportional to 859,163.40, 1,288,259.10 and 326,701.80
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Solution
The fourth proportional to 859,163.40, 1,288,259.10 and 326,701.80 is: 489,867.90
Step by Step Solution
- Step 1: Write the proportion equation
859,163.40 : 1,288,259.10 = 326,701.80 : x - Step 2: Convert to fraction form
859,163.40/1,288,259.10 = 326,701.80/x - Step 3: Cross multiply
859,163.40x = 1,288,259.10 × 326,701.80 - Step 4: Simplify right side
859,163.40x = 420,876,566,836.38 - Step 5: Solve for x
x = 420,876,566,836.38/859,163.40 - Step 6: Final answer
x = 489,867.90
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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.