Finding the Fourth Proportional to 408,045.44, 610,189.12 and 388,138.88
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Solution
The fourth proportional to 408,045.44, 610,189.12 and 388,138.88 is: 580,420.95
Step by Step Solution
- Step 1: Write the proportion equation
408,045.44 : 610,189.12 = 388,138.88 : x - Step 2: Convert to fraction form
408,045.44/610,189.12 = 388,138.88/x - Step 3: Cross multiply
408,045.44x = 610,189.12 × 388,138.88 - Step 4: Simplify right side
408,045.44x = 236,838,121,624.99 - Step 5: Solve for x
x = 236,838,121,624.99/408,045.44 - Step 6: Final answer
x = 580,420.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.