Finding the Fourth Proportional to 7,815,868.67, 10,786,497.17 and 4,917,743.75
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Solution
The fourth proportional to 7,815,868.67, 10,786,497.17 and 4,917,743.75 is: 6,786,862.89
Step by Step Solution
- Step 1: Write the proportion equation
7,815,868.67 : 10,786,497.17 = 4,917,743.75 : x - Step 2: Convert to fraction form
7,815,868.67/10,786,497.17 = 4,917,743.75/x - Step 3: Cross multiply
7,815,868.67x = 10,786,497.17 × 4,917,743.75 - Step 4: Simplify right side
7,815,868.67x = 53,045,229,044,537.71 - Step 5: Solve for x
x = 53,045,229,044,537.71/7,815,868.67 - Step 6: Final answer
x = 6,786,862.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.