Finding the Fourth Proportional to 818,641.42, 1,129,725.87 and 456,066.18
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Solution
The fourth proportional to 818,641.42, 1,129,725.87 and 456,066.18 is: 629,371.72
Step by Step Solution
- Step 1: Write the proportion equation
818,641.42 : 1,129,725.87 = 456,066.18 : x - Step 2: Convert to fraction form
818,641.42/1,129,725.87 = 456,066.18/x - Step 3: Cross multiply
818,641.42x = 1,129,725.87 × 456,066.18 - Step 4: Simplify right side
818,641.42x = 515,229,760,267.83 - Step 5: Solve for x
x = 515,229,760,267.83/818,641.42 - Step 6: Final answer
x = 629,371.72
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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.