Finding the Fourth Proportional to 487,663.21, 673,025.79 and 280,938.70
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Solution
The fourth proportional to 487,663.21, 673,025.79 and 280,938.70 is: 387,724.53
Step by Step Solution
- Step 1: Write the proportion equation
487,663.21 : 673,025.79 = 280,938.70 : x - Step 2: Convert to fraction form
487,663.21/673,025.79 = 280,938.70/x - Step 3: Cross multiply
487,663.21x = 673,025.79 × 280,938.70 - Step 4: Simplify right side
487,663.21x = 189,078,990,509.07 - Step 5: Solve for x
x = 189,078,990,509.07/487,663.21 - Step 6: Final answer
x = 387,724.53
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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.