Finding the Fourth Proportional to 854,673.80, 1,282,010.70 and 412,305.80
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Solution
The fourth proportional to 854,673.80, 1,282,010.70 and 412,305.80 is: 618,458.70
Step by Step Solution
- Step 1: Write the proportion equation
854,673.80 : 1,282,010.70 = 412,305.80 : x - Step 2: Convert to fraction form
854,673.80/1,282,010.70 = 412,305.80/x - Step 3: Cross multiply
854,673.80x = 1,282,010.70 × 412,305.80 - Step 4: Simplify right side
854,673.80x = 528,580,447,272.06 - Step 5: Solve for x
x = 528,580,447,272.06/854,673.80 - Step 6: Final answer
x = 618,458.70
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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.