Finding the Fourth Proportional to 438,649.80, 657,974.70 and 434,502.60
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Solution
The fourth proportional to 438,649.80, 657,974.70 and 434,502.60 is: 651,753.90
Step by Step Solution
- Step 1: Write the proportion equation
438,649.80 : 657,974.70 = 434,502.60 : x - Step 2: Convert to fraction form
438,649.80/657,974.70 = 434,502.60/x - Step 3: Cross multiply
438,649.80x = 657,974.70 × 434,502.60 - Step 4: Simplify right side
438,649.80x = 285,891,717,884.22 - Step 5: Solve for x
x = 285,891,717,884.22/438,649.80 - Step 6: Final answer
x = 651,753.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.