Finding the Fourth Proportional to 1,398,653.18, 1,930,138.62 and 786,806.41
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Solution
The fourth proportional to 1,398,653.18, 1,930,138.62 and 786,806.41 is: 1,085,791.29
Step by Step Solution
- Step 1: Write the proportion equation
1,398,653.18 : 1,930,138.62 = 786,806.41 : x - Step 2: Convert to fraction form
1,398,653.18/1,930,138.62 = 786,806.41/x - Step 3: Cross multiply
1,398,653.18x = 1,930,138.62 × 786,806.41 - Step 4: Simplify right side
1,398,653.18x = 1,518,645,438,404.55 - Step 5: Solve for x
x = 1,518,645,438,404.55/1,398,653.18 - Step 6: Final answer
x = 1,085,791.29
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.