Finding the Fourth Proportional to 918,212.10, 1,377,318.15 and 638,276.10
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Solution
The fourth proportional to 918,212.10, 1,377,318.15 and 638,276.10 is: 957,414.15
Step by Step Solution
- Step 1: Write the proportion equation
918,212.10 : 1,377,318.15 = 638,276.10 : x - Step 2: Convert to fraction form
918,212.10/1,377,318.15 = 638,276.10/x - Step 3: Cross multiply
918,212.10x = 1,377,318.15 × 638,276.10 - Step 4: Simplify right side
918,212.10x = 879,109,257,241.22 - Step 5: Solve for x
x = 879,109,257,241.22/918,212.10 - Step 6: Final answer
x = 957,414.15
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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.