Finding the Fourth Proportional to 1,405,947.12, 2,108,979 and 408,675.12
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Solution
The fourth proportional to 1,405,947.12, 2,108,979 and 408,675.12 is: 613,029.63
Step by Step Solution
- Step 1: Write the proportion equation
1,405,947.12 : 2,108,979 = 408,675.12 : x - Step 2: Convert to fraction form
1,405,947.12/2,108,979 = 408,675.12/x - Step 3: Cross multiply
1,405,947.12x = 2,108,979 × 408,675.12 - Step 4: Simplify right side
1,405,947.12x = 861,887,245,902.48 - Step 5: Solve for x
x = 861,887,245,902.48/1,405,947.12 - Step 6: Final answer
x = 613,029.63
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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.