Finding the Fourth Proportional to 812,180.84, 1,120,818.42 and 449,610.75
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Solution
The fourth proportional to 812,180.84, 1,120,818.42 and 449,610.75 is: 620,467.74
Step by Step Solution
- Step 1: Write the proportion equation
812,180.84 : 1,120,818.42 = 449,610.75 : x - Step 2: Convert to fraction form
812,180.84/1,120,818.42 = 449,610.75/x - Step 3: Cross multiply
812,180.84x = 1,120,818.42 × 449,610.75 - Step 4: Simplify right side
812,180.84x = 503,932,010,430.02 - Step 5: Solve for x
x = 503,932,010,430.02/812,180.84 - Step 6: Final answer
x = 620,467.74
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1.5x scale
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.