Finding the Fourth Proportional to 918,129.20, 1,377,193.80 and 918,129.20
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Solution
The fourth proportional to 918,129.20, 1,377,193.80 and 918,129.20 is: 1,377,193.80
Step by Step Solution
- Step 1: Write the proportion equation
918,129.20 : 1,377,193.80 = 918,129.20 : x - Step 2: Convert to fraction form
918,129.20/1,377,193.80 = 918,129.20/x - Step 3: Cross multiply
918,129.20x = 1,377,193.80 × 918,129.20 - Step 4: Simplify right side
918,129.20x = 1,264,441,841,838.96 - Step 5: Solve for x
x = 1,264,441,841,838.96/918,129.20 - Step 6: Final answer
x = 1,377,193.80
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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.