Finding the Fourth Proportional to 854,783.80, 1,282,175.70 and 412,415.80
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Solution
The fourth proportional to 854,783.80, 1,282,175.70 and 412,415.80 is: 618,623.70
Step by Step Solution
- Step 1: Write the proportion equation
854,783.80 : 1,282,175.70 = 412,415.80 : x - Step 2: Convert to fraction form
854,783.80/1,282,175.70 = 412,415.80/x - Step 3: Cross multiply
854,783.80x = 1,282,175.70 × 412,415.80 - Step 4: Simplify right side
854,783.80x = 528,789,517,056.06 - Step 5: Solve for x
x = 528,789,517,056.06/854,783.80 - Step 6: Final answer
x = 618,623.70
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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.