Finding the Fourth Proportional to 780,314.62, 1,170,471.86 and 219,349.12
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Solution
The fourth proportional to 780,314.62, 1,170,471.86 and 219,349.12 is: 329,023.66
Step by Step Solution
- Step 1: Write the proportion equation
780,314.62 : 1,170,471.86 = 219,349.12 : x - Step 2: Convert to fraction form
780,314.62/1,170,471.86 = 219,349.12/x - Step 3: Cross multiply
780,314.62x = 1,170,471.86 × 219,349.12 - Step 4: Simplify right side
780,314.62x = 256,741,972,475.76 - Step 5: Solve for x
x = 256,741,972,475.76/780,314.62 - Step 6: Final answer
x = 329,023.66
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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.