Finding the Fourth Proportional to 764,804.36, 1,055,455.79 and 420,654.78
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Solution
The fourth proportional to 764,804.36, 1,055,455.79 and 420,654.78 is: 580,517.77
Step by Step Solution
- Step 1: Write the proportion equation
764,804.36 : 1,055,455.79 = 420,654.78 : x - Step 2: Convert to fraction form
764,804.36/1,055,455.79 = 420,654.78/x - Step 3: Cross multiply
764,804.36x = 1,055,455.79 × 420,654.78 - Step 4: Simplify right side
764,804.36x = 443,982,521,038.90 - Step 5: Solve for x
x = 443,982,521,038.90/764,804.36 - Step 6: Final answer
x = 580,517.77
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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.