Finding the Fourth Proportional to 7,680,117.87, 11,520,619.68 and 2,887,848.66
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Solution
The fourth proportional to 7,680,117.87, 11,520,619.68 and 2,887,848.66 is: 4,331,939.52
Step by Step Solution
- Step 1: Write the proportion equation
7,680,117.87 : 11,520,619.68 = 2,887,848.66 : x - Step 2: Convert to fraction form
7,680,117.87/11,520,619.68 = 2,887,848.66/x - Step 3: Cross multiply
7,680,117.87x = 11,520,619.68 × 2,887,848.66 - Step 4: Simplify right side
7,680,117.87x = 33,269,806,105,257.63 - Step 5: Solve for x
x = 33,269,806,105,257.63/7,680,117.87 - Step 6: Final answer
x = 4,331,939.52
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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.