Finding the Fourth Proportional to 515,825.44, 711,853.12 and 289,484.80
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Solution
The fourth proportional to 515,825.44, 711,853.12 and 289,484.80 is: 399,496.89
Step by Step Solution
- Step 1: Write the proportion equation
515,825.44 : 711,853.12 = 289,484.80 : x - Step 2: Convert to fraction form
515,825.44/711,853.12 = 289,484.80/x - Step 3: Cross multiply
515,825.44x = 711,853.12 × 289,484.80 - Step 4: Simplify right side
515,825.44x = 206,070,658,072.58 - Step 5: Solve for x
x = 206,070,658,072.58/515,825.44 - Step 6: Final answer
x = 399,496.89
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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.