Finding the Fourth Proportional to 515,400.24, 711,251.64 and 289,043.76
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Solution
The fourth proportional to 515,400.24, 711,251.64 and 289,043.76 is: 398,880.00
Step by Step Solution
- Step 1: Write the proportion equation
515,400.24 : 711,251.64 = 289,043.76 : x - Step 2: Convert to fraction form
515,400.24/711,251.64 = 289,043.76/x - Step 3: Cross multiply
515,400.24x = 711,251.64 × 289,043.76 - Step 4: Simplify right side
515,400.24x = 205,582,848,331.77 - Step 5: Solve for x
x = 205,582,848,331.77/515,400.24 - Step 6: Final answer
x = 398,880.00
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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.