Finding the Fourth Proportional to 678,613.01, 936,601.17 and 392,299.07
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Solution
The fourth proportional to 678,613.01, 936,601.17 and 392,299.07 is: 541,439.32
Step by Step Solution
- Step 1: Write the proportion equation
678,613.01 : 936,601.17 = 392,299.07 : x - Step 2: Convert to fraction form
678,613.01/936,601.17 = 392,299.07/x - Step 3: Cross multiply
678,613.01x = 936,601.17 × 392,299.07 - Step 4: Simplify right side
678,613.01x = 367,427,767,951.91 - Step 5: Solve for x
x = 367,427,767,951.91/678,613.01 - Step 6: Final answer
x = 541,439.32
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1.5x scale
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.