Finding the Fourth Proportional to 486,090.40, 729,135.60 and 299,207.20
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Solution
The fourth proportional to 486,090.40, 729,135.60 and 299,207.20 is: 448,810.80
Step by Step Solution
- Step 1: Write the proportion equation
486,090.40 : 729,135.60 = 299,207.20 : x - Step 2: Convert to fraction form
486,090.40/729,135.60 = 299,207.20/x - Step 3: Cross multiply
486,090.40x = 729,135.60 × 299,207.20 - Step 4: Simplify right side
486,090.40x = 218,162,621,296.32 - Step 5: Solve for x
x = 218,162,621,296.32/486,090.40 - Step 6: Final answer
x = 448,810.80
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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.