Finding the Fourth Proportional to 686,269.80, 1,029,809.10 and 286,879.80
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Solution
The fourth proportional to 686,269.80, 1,029,809.10 and 286,879.80 is: 430,488.75
Step by Step Solution
- Step 1: Write the proportion equation
686,269.80 : 1,029,809.10 = 286,879.80 : x - Step 2: Convert to fraction form
686,269.80/1,029,809.10 = 286,879.80/x - Step 3: Cross multiply
686,269.80x = 1,029,809.10 × 286,879.80 - Step 4: Simplify right side
686,269.80x = 295,431,428,646.18 - Step 5: Solve for x
x = 295,431,428,646.18/686,269.80 - Step 6: Final answer
x = 430,488.75
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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.