Finding the Fourth Proportional to 1,990,920.09, 2,986,052.07 and 853,865.97
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Solution
The fourth proportional to 1,990,920.09, 2,986,052.07 and 853,865.97 is: 1,280,658.25
Step by Step Solution
- Step 1: Write the proportion equation
1,990,920.09 : 2,986,052.07 = 853,865.97 : x - Step 2: Convert to fraction form
1,990,920.09/2,986,052.07 = 853,865.97/x - Step 3: Cross multiply
1,990,920.09x = 2,986,052.07 × 853,865.97 - Step 4: Simplify right side
1,990,920.09x = 2,549,688,247,221.06 - Step 5: Solve for x
x = 2,549,688,247,221.06/1,990,920.09 - Step 6: Final answer
x = 1,280,658.25
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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.