Finding the Fourth Proportional to 742,687.28, 1,024,932.87 and 420,390.48
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Solution
The fourth proportional to 742,687.28, 1,024,932.87 and 420,390.48 is: 580,152.69
Step by Step Solution
- Step 1: Write the proportion equation
742,687.28 : 1,024,932.87 = 420,390.48 : x - Step 2: Convert to fraction form
742,687.28/1,024,932.87 = 420,390.48/x - Step 3: Cross multiply
742,687.28x = 1,024,932.87 × 420,390.48 - Step 4: Simplify right side
742,687.28x = 430,872,021,187.08 - Step 5: Solve for x
x = 430,872,021,187.08/742,687.28 - Step 6: Final answer
x = 580,152.69
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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.