Finding the Fourth Proportional to 858,775.40, 1,288,163.10 and 620,829.80
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Solution
The fourth proportional to 858,775.40, 1,288,163.10 and 620,829.80 is: 931,244.70
Step by Step Solution
- Step 1: Write the proportion equation
858,775.40 : 1,288,163.10 = 620,829.80 : x - Step 2: Convert to fraction form
858,775.40/1,288,163.10 = 620,829.80/x - Step 3: Cross multiply
858,775.40x = 1,288,163.10 × 620,829.80 - Step 4: Simplify right side
858,775.40x = 799,730,039,740.38 - Step 5: Solve for x
x = 799,730,039,740.38/858,775.40 - Step 6: Final answer
x = 931,244.70
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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.