Finding the Fourth Proportional to 854,791.80, 1,282,187.70 and 412,423.80
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Solution
The fourth proportional to 854,791.80, 1,282,187.70 and 412,423.80 is: 618,635.70
Step by Step Solution
- Step 1: Write the proportion equation
854,791.80 : 1,282,187.70 = 412,423.80 : x - Step 2: Convert to fraction form
854,791.80/1,282,187.70 = 412,423.80/x - Step 3: Cross multiply
854,791.80x = 1,282,187.70 × 412,423.80 - Step 4: Simplify right side
854,791.80x = 528,804,723,547.26 - Step 5: Solve for x
x = 528,804,723,547.26/854,791.80 - Step 6: Final answer
x = 618,635.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.