Finding the Fourth Proportional to 993,161.70, 1,489,742.55 and 328,313.70
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Solution
The fourth proportional to 993,161.70, 1,489,742.55 and 328,313.70 is: 492,470.55
Step by Step Solution
- Step 1: Write the proportion equation
993,161.70 : 1,489,742.55 = 328,313.70 : x - Step 2: Convert to fraction form
993,161.70/1,489,742.55 = 328,313.70/x - Step 3: Cross multiply
993,161.70x = 1,489,742.55 × 328,313.70 - Step 4: Simplify right side
993,161.70x = 489,102,888,637.94 - Step 5: Solve for x
x = 489,102,888,637.94/993,161.70 - Step 6: Final answer
x = 492,470.55
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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.