Finding the Fourth Proportional to 718,420.08, 1,077,630.12 and 318,966.96
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Solution
The fourth proportional to 718,420.08, 1,077,630.12 and 318,966.96 is: 478,450.44
Step by Step Solution
- Step 1: Write the proportion equation
718,420.08 : 1,077,630.12 = 318,966.96 : x - Step 2: Convert to fraction form
718,420.08/1,077,630.12 = 318,966.96/x - Step 3: Cross multiply
718,420.08x = 1,077,630.12 × 318,966.96 - Step 4: Simplify right side
718,420.08x = 343,728,403,380.84 - Step 5: Solve for x
x = 343,728,403,380.84/718,420.08 - Step 6: Final answer
x = 478,450.44
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Similar ratio
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1.5x scale
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.