Finding the Fourth Proportional to 490,219.40, 676,397.82 and 286,177.72
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Solution
The fourth proportional to 490,219.40, 676,397.82 and 286,177.72 is: 394,863.99
Step by Step Solution
- Step 1: Write the proportion equation
490,219.40 : 676,397.82 = 286,177.72 : x - Step 2: Convert to fraction form
490,219.40/676,397.82 = 286,177.72/x - Step 3: Cross multiply
490,219.40x = 676,397.82 × 286,177.72 - Step 4: Simplify right side
490,219.40x = 193,569,985,940.57 - Step 5: Solve for x
x = 193,569,985,940.57/490,219.40 - Step 6: Final answer
x = 394,863.99
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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.