Finding the Fourth Proportional to 2,138,941.12, 3,209,979.84 and 1,723,236.16
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Solution
The fourth proportional to 2,138,941.12, 3,209,979.84 and 1,723,236.16 is: 2,586,117.63
Step by Step Solution
- Step 1: Write the proportion equation
2,138,941.12 : 3,209,979.84 = 1,723,236.16 : x - Step 2: Convert to fraction form
2,138,941.12/3,209,979.84 = 1,723,236.16/x - Step 3: Cross multiply
2,138,941.12x = 3,209,979.84 × 1,723,236.16 - Step 4: Simplify right side
2,138,941.12x = 5,531,553,333,159.01 - Step 5: Solve for x
x = 5,531,553,333,159.01/2,138,941.12 - Step 6: Final answer
x = 2,586,117.63
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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.