Finding the Fourth Proportional to 821,431.23, 1,232,587.95 and 341,989.98
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Solution
The fourth proportional to 821,431.23, 1,232,587.95 and 341,989.98 is: 513,168.62
Step by Step Solution
- Step 1: Write the proportion equation
821,431.23 : 1,232,587.95 = 341,989.98 : x - Step 2: Convert to fraction form
821,431.23/1,232,587.95 = 341,989.98/x - Step 3: Cross multiply
821,431.23x = 1,232,587.95 × 341,989.98 - Step 4: Simplify right side
821,431.23x = 421,532,728,368.74 - Step 5: Solve for x
x = 421,532,728,368.74/821,431.23 - Step 6: Final answer
x = 513,168.62
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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.