Finding the Fourth Proportional to 487,310.16, 672,115.68 and 419,440.80
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Solution
The fourth proportional to 487,310.16, 672,115.68 and 419,440.80 is: 578,507.82
Step by Step Solution
- Step 1: Write the proportion equation
487,310.16 : 672,115.68 = 419,440.80 : x - Step 2: Convert to fraction form
487,310.16/672,115.68 = 419,440.80/x - Step 3: Cross multiply
487,310.16x = 672,115.68 × 419,440.80 - Step 4: Simplify right side
487,310.16x = 281,912,738,511.74 - Step 5: Solve for x
x = 281,912,738,511.74/487,310.16 - Step 6: Final answer
x = 578,507.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.