Finding the Fourth Proportional to 642,331.40, 886,352.68 and 355,797.96
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Solution
The fourth proportional to 642,331.40, 886,352.68 and 355,797.96 is: 490,965.37
Step by Step Solution
- Step 1: Write the proportion equation
642,331.40 : 886,352.68 = 355,797.96 : x - Step 2: Convert to fraction form
642,331.40/886,352.68 = 355,797.96/x - Step 3: Cross multiply
642,331.40x = 886,352.68 × 355,797.96 - Step 4: Simplify right side
642,331.40x = 315,362,475,384.53 - Step 5: Solve for x
x = 315,362,475,384.53/642,331.40 - Step 6: Final answer
x = 490,965.37
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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.