Finding the Fourth Proportional to 438,327.20, 657,490.80 and 363,531.80
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Solution
The fourth proportional to 438,327.20, 657,490.80 and 363,531.80 is: 545,297.70
Step by Step Solution
- Step 1: Write the proportion equation
438,327.20 : 657,490.80 = 363,531.80 : x - Step 2: Convert to fraction form
438,327.20/657,490.80 = 363,531.80/x - Step 3: Cross multiply
438,327.20x = 657,490.80 × 363,531.80 - Step 4: Simplify right side
438,327.20x = 239,018,814,007.44 - Step 5: Solve for x
x = 239,018,814,007.44/438,327.20 - Step 6: Final answer
x = 545,297.70
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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.