Finding the Fourth Proportional to 515,827.36, 711,911.28 and 289,485.28
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Solution
The fourth proportional to 515,827.36, 711,911.28 and 289,485.28 is: 399,528.70
Step by Step Solution
- Step 1: Write the proportion equation
515,827.36 : 711,911.28 = 289,485.28 : x - Step 2: Convert to fraction form
515,827.36/711,911.28 = 289,485.28/x - Step 3: Cross multiply
515,827.36x = 711,911.28 × 289,485.28 - Step 4: Simplify right side
515,827.36x = 206,087,836,225.96 - Step 5: Solve for x
x = 206,087,836,225.96/515,827.36 - Step 6: Final answer
x = 399,528.70
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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.