Finding the Fourth Proportional to 1,326,489.05, 1,990,121.16 and 427,910.96
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Solution
The fourth proportional to 1,326,489.05, 1,990,121.16 and 427,910.96 is: 641,991.47
Step by Step Solution
- Step 1: Write the proportion equation
1,326,489.05 : 1,990,121.16 = 427,910.96 : x - Step 2: Convert to fraction form
1,326,489.05/1,990,121.16 = 427,910.96/x - Step 3: Cross multiply
1,326,489.05x = 1,990,121.16 × 427,910.96 - Step 4: Simplify right side
1,326,489.05x = 851,594,656,091.91 - Step 5: Solve for x
x = 851,594,656,091.91/1,326,489.05 - Step 6: Final answer
x = 641,991.47
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.