Finding the Fourth Proportional to 918,137.20, 1,377,205.80 and 412,502.80
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Solution
The fourth proportional to 918,137.20, 1,377,205.80 and 412,502.80 is: 618,754.20
Step by Step Solution
- Step 1: Write the proportion equation
918,137.20 : 1,377,205.80 = 412,502.80 : x - Step 2: Convert to fraction form
918,137.20/1,377,205.80 = 412,502.80/x - Step 3: Cross multiply
918,137.20x = 1,377,205.80 × 412,502.80 - Step 4: Simplify right side
918,137.20x = 568,101,248,676.24 - Step 5: Solve for x
x = 568,101,248,676.24/918,137.20 - Step 6: Final answer
x = 618,754.20
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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.