Finding the Fourth Proportional to 498,518.28, 688,014.41 and 280,733.99
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Solution
The fourth proportional to 498,518.28, 688,014.41 and 280,733.99 is: 387,446.22
Step by Step Solution
- Step 1: Write the proportion equation
498,518.28 : 688,014.41 = 280,733.99 : x - Step 2: Convert to fraction form
498,518.28/688,014.41 = 280,733.99/x - Step 3: Cross multiply
498,518.28x = 688,014.41 × 280,733.99 - Step 4: Simplify right side
498,518.28x = 193,149,025,653.05 - Step 5: Solve for x
x = 193,149,025,653.05/498,518.28 - Step 6: Final answer
x = 387,446.22
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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.