Finding the Fourth Proportional to 985,728.58, 1,478,646.68 and 311,759.57
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Solution
The fourth proportional to 985,728.58, 1,478,646.68 and 311,759.57 is: 467,656.37
Step by Step Solution
- Step 1: Write the proportion equation
985,728.58 : 1,478,646.68 = 311,759.57 : x - Step 2: Convert to fraction form
985,728.58/1,478,646.68 = 311,759.57/x - Step 3: Cross multiply
985,728.58x = 1,478,646.68 × 311,759.57 - Step 4: Simplify right side
985,728.58x = 460,982,253,138.73 - Step 5: Solve for x
x = 460,982,253,138.73/985,728.58 - Step 6: Final answer
x = 467,656.37
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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.