Finding the Fourth Proportional to 812,207.12, 1,120,832.40 and 449,623.52
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Solution
The fourth proportional to 812,207.12, 1,120,832.40 and 449,623.52 is: 620,473.03
Step by Step Solution
- Step 1: Write the proportion equation
812,207.12 : 1,120,832.40 = 449,623.52 : x - Step 2: Convert to fraction form
812,207.12/1,120,832.40 = 449,623.52/x - Step 3: Cross multiply
812,207.12x = 1,120,832.40 × 449,623.52 - Step 4: Simplify right side
812,207.12x = 503,952,609,018.05 - Step 5: Solve for x
x = 503,952,609,018.05/812,207.12 - Step 6: Final answer
x = 620,473.03
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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.