Finding the Fourth Proportional to 812,065.23, 1,120,652.15 and 449,514.09
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Solution
The fourth proportional to 812,065.23, 1,120,652.15 and 449,514.09 is: 620,330.62
Step by Step Solution
- Step 1: Write the proportion equation
812,065.23 : 1,120,652.15 = 449,514.09 : x - Step 2: Convert to fraction form
812,065.23/1,120,652.15 = 449,514.09/x - Step 3: Cross multiply
812,065.23x = 1,120,652.15 × 449,514.09 - Step 4: Simplify right side
812,065.23x = 503,748,929,166.22 - Step 5: Solve for x
x = 503,748,929,166.22/812,065.23 - Step 6: Final answer
x = 620,330.62
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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.