Finding the Fourth Proportional to 7,352,407.40, 11,028,611.10 and 5,321,121.80
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Solution
The fourth proportional to 7,352,407.40, 11,028,611.10 and 5,321,121.80 is: 7,981,682.70
Step by Step Solution
- Step 1: Write the proportion equation
7,352,407.40 : 11,028,611.10 = 5,321,121.80 : x - Step 2: Convert to fraction form
7,352,407.40/11,028,611.10 = 5,321,121.80/x - Step 3: Cross multiply
7,352,407.40x = 11,028,611.10 × 5,321,121.80 - Step 4: Simplify right side
7,352,407.40x = 58,684,582,947,931.98 - Step 5: Solve for x
x = 58,684,582,947,931.98/7,352,407.40 - Step 6: Final answer
x = 7,981,682.70
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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.