Finding the Fourth Proportional to 438,605.67, 605,310.99 and 348,703.56
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Solution
The fourth proportional to 438,605.67, 605,310.99 and 348,703.56 is: 481,238.87
Step by Step Solution
- Step 1: Write the proportion equation
438,605.67 : 605,310.99 = 348,703.56 : x - Step 2: Convert to fraction form
438,605.67/605,310.99 = 348,703.56/x - Step 3: Cross multiply
438,605.67x = 605,310.99 × 348,703.56 - Step 4: Simplify right side
438,605.67x = 211,074,097,120.12 - Step 5: Solve for x
x = 211,074,097,120.12/438,605.67 - Step 6: Final answer
x = 481,238.87
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1.5x scale
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.