Finding the Fourth Proportional to 719,428.13, 992,813.19 and 397,137.46
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Solution
The fourth proportional to 719,428.13, 992,813.19 and 397,137.46 is: 548,051.00
Step by Step Solution
- Step 1: Write the proportion equation
719,428.13 : 992,813.19 = 397,137.46 : x - Step 2: Convert to fraction form
719,428.13/992,813.19 = 397,137.46/x - Step 3: Cross multiply
719,428.13x = 992,813.19 × 397,137.46 - Step 4: Simplify right side
719,428.13x = 394,283,308,531.10 - Step 5: Solve for x
x = 394,283,308,531.10/719,428.13 - Step 6: Final answer
x = 548,051.00
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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.