Finding the Fourth Proportional to 657,968.20, 985,202.70 and 420,022.60
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Solution
The fourth proportional to 657,968.20, 985,202.70 and 420,022.60 is: 628,917.02
Step by Step Solution
- Step 1: Write the proportion equation
657,968.20 : 985,202.70 = 420,022.60 : x - Step 2: Convert to fraction form
657,968.20/985,202.70 = 420,022.60/x - Step 3: Cross multiply
657,968.20x = 985,202.70 × 420,022.60 - Step 4: Simplify right side
657,968.20x = 413,807,399,581.02 - Step 5: Solve for x
x = 413,807,399,581.02/657,968.20 - Step 6: Final answer
x = 628,917.02
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.