Finding the Fourth Proportional to 853,716.90, 1,178,350.62 and 491,177.88
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Solution
The fourth proportional to 853,716.90, 1,178,350.62 and 491,177.88 is: 677,952.80
Step by Step Solution
- Step 1: Write the proportion equation
853,716.90 : 1,178,350.62 = 491,177.88 : x - Step 2: Convert to fraction form
853,716.90/1,178,350.62 = 491,177.88/x - Step 3: Cross multiply
853,716.90x = 1,178,350.62 × 491,177.88 - Step 4: Simplify right side
853,716.90x = 578,779,759,428.29 - Step 5: Solve for x
x = 578,779,759,428.29/853,716.90 - Step 6: Final answer
x = 677,952.80
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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.