Finding the Fourth Proportional to 738,389, 1,018,977.36 and 398,857.26
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Solution
The fourth proportional to 738,389, 1,018,977.36 and 398,857.26 is: 550,423.31
Step by Step Solution
- Step 1: Write the proportion equation
738,389 : 1,018,977.36 = 398,857.26 : x - Step 2: Convert to fraction form
738,389/1,018,977.36 = 398,857.26/x - Step 3: Cross multiply
738,389x = 1,018,977.36 × 398,857.26 - Step 4: Simplify right side
738,389x = 406,426,517,811.63 - Step 5: Solve for x
x = 406,426,517,811.63/738,389 - Step 6: Final answer
x = 550,423.31
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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.