Finding the Fourth Proportional to 812,112.24, 1,120,705.20 and 449,536.80
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Solution
The fourth proportional to 812,112.24, 1,120,705.20 and 449,536.80 is: 620,355.42
Step by Step Solution
- Step 1: Write the proportion equation
812,112.24 : 1,120,705.20 = 449,536.80 : x - Step 2: Convert to fraction form
812,112.24/1,120,705.20 = 449,536.80/x - Step 3: Cross multiply
812,112.24x = 1,120,705.20 × 449,536.80 - Step 4: Simplify right side
812,112.24x = 503,798,229,351.36 - Step 5: Solve for x
x = 503,798,229,351.36/812,112.24 - Step 6: Final answer
x = 620,355.42
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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.