Finding the Fourth Proportional to 683,938.99, 943,884.66 and 378,008.80
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Solution
The fourth proportional to 683,938.99, 943,884.66 and 378,008.80 is: 521,679.15
Step by Step Solution
- Step 1: Write the proportion equation
683,938.99 : 943,884.66 = 378,008.80 : x - Step 2: Convert to fraction form
683,938.99/943,884.66 = 378,008.80/x - Step 3: Cross multiply
683,938.99x = 943,884.66 × 378,008.80 - Step 4: Simplify right side
683,938.99x = 356,796,707,665.01 - Step 5: Solve for x
x = 356,796,707,665.01/683,938.99 - Step 6: Final answer
x = 521,679.15
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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.