Finding the Fourth Proportional to 807,906.80, 1,212,516.30 and 781,662.80
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Solution
The fourth proportional to 807,906.80, 1,212,516.30 and 781,662.80 is: 1,173,128.99
Step by Step Solution
- Step 1: Write the proportion equation
807,906.80 : 1,212,516.30 = 781,662.80 : x - Step 2: Convert to fraction form
807,906.80/1,212,516.30 = 781,662.80/x - Step 3: Cross multiply
807,906.80x = 1,212,516.30 × 781,662.80 - Step 4: Simplify right side
807,906.80x = 947,778,886,103.64 - Step 5: Solve for x
x = 947,778,886,103.64/807,906.80 - Step 6: Final answer
x = 1,173,128.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.