Finding the Fourth Proportional to 918,163.20, 1,377,244.80 and 669,331.20
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Solution
The fourth proportional to 918,163.20, 1,377,244.80 and 669,331.20 is: 1,003,996.80
Step by Step Solution
- Step 1: Write the proportion equation
918,163.20 : 1,377,244.80 = 669,331.20 : x - Step 2: Convert to fraction form
918,163.20/1,377,244.80 = 669,331.20/x - Step 3: Cross multiply
918,163.20x = 1,377,244.80 × 669,331.20 - Step 4: Simplify right side
918,163.20x = 921,832,914,677.76 - Step 5: Solve for x
x = 921,832,914,677.76/918,163.20 - Step 6: Final answer
x = 1,003,996.80
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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.