Finding the Fourth Proportional to 639,343.80, 959,793.30 and 480,324.60
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Solution
The fourth proportional to 639,343.80, 959,793.30 and 480,324.60 is: 721,071.09
Step by Step Solution
- Step 1: Write the proportion equation
639,343.80 : 959,793.30 = 480,324.60 : x - Step 2: Convert to fraction form
639,343.80/959,793.30 = 480,324.60/x - Step 3: Cross multiply
639,343.80x = 959,793.30 × 480,324.60 - Step 4: Simplify right side
639,343.80x = 461,012,332,905.18 - Step 5: Solve for x
x = 461,012,332,905.18/639,343.80 - Step 6: Final answer
x = 721,071.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.