Finding the Fourth Proportional to 920,035.76, 1,379,586.92 and 420,972.08
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Solution
The fourth proportional to 920,035.76, 1,379,586.92 and 420,972.08 is: 631,244.57
Step by Step Solution
- Step 1: Write the proportion equation
920,035.76 : 1,379,586.92 = 420,972.08 : x - Step 2: Convert to fraction form
920,035.76/1,379,586.92 = 420,972.08/x - Step 3: Cross multiply
920,035.76x = 1,379,586.92 × 420,972.08 - Step 4: Simplify right side
920,035.76x = 580,767,575,253.19 - Step 5: Solve for x
x = 580,767,575,253.19/920,035.76 - Step 6: Final answer
x = 631,244.57
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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.