Finding the Fourth Proportional to 686,382.15, 946,886.99 and 431,873.67
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Solution
The fourth proportional to 686,382.15, 946,886.99 and 431,873.67 is: 595,784.08
Step by Step Solution
- Step 1: Write the proportion equation
686,382.15 : 946,886.99 = 431,873.67 : x - Step 2: Convert to fraction form
686,382.15/946,886.99 = 431,873.67/x - Step 3: Cross multiply
686,382.15x = 946,886.99 × 431,873.67 - Step 4: Simplify right side
686,382.15x = 408,935,557,287.19 - Step 5: Solve for x
x = 408,935,557,287.19/686,382.15 - Step 6: Final answer
x = 595,784.08
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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.