Finding the Fourth Proportional to 724,892.68, 1,000,364.26 and 398,219.44
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Solution
The fourth proportional to 724,892.68, 1,000,364.26 and 398,219.44 is: 549,549.62
Step by Step Solution
- Step 1: Write the proportion equation
724,892.68 : 1,000,364.26 = 398,219.44 : x - Step 2: Convert to fraction form
724,892.68/1,000,364.26 = 398,219.44/x - Step 3: Cross multiply
724,892.68x = 1,000,364.26 × 398,219.44 - Step 4: Simplify right side
724,892.68x = 398,364,495,413.21 - Step 5: Solve for x
x = 398,364,495,413.21/724,892.68 - Step 6: Final answer
x = 549,549.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.