Finding the Fourth Proportional to 9,381,814.61, 12,940,229.99 and 8,609,938.07
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Solution
The fourth proportional to 9,381,814.61, 12,940,229.99 and 8,609,938.07 is: 11,875,589.48
Step by Step Solution
- Step 1: Write the proportion equation
9,381,814.61 : 12,940,229.99 = 8,609,938.07 : x - Step 2: Convert to fraction form
9,381,814.61/12,940,229.99 = 8,609,938.07/x - Step 3: Cross multiply
9,381,814.61x = 12,940,229.99 × 8,609,938.07 - Step 4: Simplify right side
9,381,814.61x = 111,414,578,782,280.41 - Step 5: Solve for x
x = 111,414,578,782,280.41/9,381,814.61 - Step 6: Final answer
x = 11,875,589.48
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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.