Finding the Fourth Proportional to 642,324.37, 886,336.11 and 355,772.70
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Solution
The fourth proportional to 642,324.37, 886,336.11 and 355,772.70 is: 490,926.71
Step by Step Solution
- Step 1: Write the proportion equation
642,324.37 : 886,336.11 = 355,772.70 : x - Step 2: Convert to fraction form
642,324.37/886,336.11 = 355,772.70/x - Step 3: Cross multiply
642,324.37x = 886,336.11 × 355,772.70 - Step 4: Simplify right side
642,324.37x = 315,334,186,530.52 - Step 5: Solve for x
x = 315,334,186,530.52/642,324.37 - Step 6: Final answer
x = 490,926.71
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1.5x scale
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.