Finding the Fourth Proportional to 738,345.94, 1,018,917.80 and 398,814.19
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Solution
The fourth proportional to 738,345.94, 1,018,917.80 and 398,814.19 is: 550,363.80
Step by Step Solution
- Step 1: Write the proportion equation
738,345.94 : 1,018,917.80 = 398,814.19 : x - Step 2: Convert to fraction form
738,345.94/1,018,917.80 = 398,814.19/x - Step 3: Cross multiply
738,345.94x = 1,018,917.80 × 398,814.19 - Step 4: Simplify right side
738,345.94x = 406,358,874,037.77 - Step 5: Solve for x
x = 406,358,874,037.77/738,345.94 - Step 6: Final answer
x = 550,363.80
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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.