Finding the Fourth Proportional to 7,278,197.18, 10,915,427.39 and 2,159,416.14
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Solution
The fourth proportional to 7,278,197.18, 10,915,427.39 and 2,159,416.14 is: 3,238,569.87
Step by Step Solution
- Step 1: Write the proportion equation
7,278,197.18 : 10,915,427.39 = 2,159,416.14 : x - Step 2: Convert to fraction form
7,278,197.18/10,915,427.39 = 2,159,416.14/x - Step 3: Cross multiply
7,278,197.18x = 10,915,427.39 × 2,159,416.14 - Step 4: Simplify right side
7,278,197.18x = 23,570,950,070,167.00 - Step 5: Solve for x
x = 23,570,950,070,167.00/7,278,197.18 - Step 6: Final answer
x = 3,238,569.87
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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.