Finding the Fourth Proportional to 7,889,618.40, 11,833,552.80 and 6,467,193.60
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Solution
The fourth proportional to 7,889,618.40, 11,833,552.80 and 6,467,193.60 is: 9,700,073.32
Step by Step Solution
- Step 1: Write the proportion equation
7,889,618.40 : 11,833,552.80 = 6,467,193.60 : x - Step 2: Convert to fraction form
7,889,618.40/11,833,552.80 = 6,467,193.60/x - Step 3: Cross multiply
7,889,618.40x = 11,833,552.80 × 6,467,193.60 - Step 4: Simplify right side
7,889,618.40x = 76,529,876,933,422.08 - Step 5: Solve for x
x = 76,529,876,933,422.08/7,889,618.40 - Step 6: Final answer
x = 9,700,073.32
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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.