Finding the Fourth Proportional to 920,475.10, 1,380,929.98 and 289,388.91
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Solution
The fourth proportional to 920,475.10, 1,380,929.98 and 289,388.91 is: 434,151.69
Step by Step Solution
- Step 1: Write the proportion equation
920,475.10 : 1,380,929.98 = 289,388.91 : x - Step 2: Convert to fraction form
920,475.10/1,380,929.98 = 289,388.91/x - Step 3: Cross multiply
920,475.10x = 1,380,929.98 × 289,388.91 - Step 4: Simplify right side
920,475.10x = 399,625,819,390.68 - Step 5: Solve for x
x = 399,625,819,390.68/920,475.10 - Step 6: Final answer
x = 434,151.69
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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.