Finding the Fourth Proportional to 494,090.70, 681,594.74 and 312,496.80
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Solution
The fourth proportional to 494,090.70, 681,594.74 and 312,496.80 is: 431,087.20
Step by Step Solution
- Step 1: Write the proportion equation
494,090.70 : 681,594.74 = 312,496.80 : x - Step 2: Convert to fraction form
494,090.70/681,594.74 = 312,496.80/x - Step 3: Cross multiply
494,090.70x = 681,594.74 × 312,496.80 - Step 4: Simplify right side
494,090.70x = 212,996,175,146.83 - Step 5: Solve for x
x = 212,996,175,146.83/494,090.70 - Step 6: Final answer
x = 431,087.20
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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.