Finding the Fourth Proportional to 679,739.58, 937,806.99 and 421,523.70
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Solution
The fourth proportional to 679,739.58, 937,806.99 and 421,523.70 is: 581,557.83
Step by Step Solution
- Step 1: Write the proportion equation
679,739.58 : 937,806.99 = 421,523.70 : x - Step 2: Convert to fraction form
679,739.58/937,806.99 = 421,523.70/x - Step 3: Cross multiply
679,739.58x = 937,806.99 × 421,523.70 - Step 4: Simplify right side
679,739.58x = 395,307,872,310.66 - Step 5: Solve for x
x = 395,307,872,310.66/679,739.58 - Step 6: Final answer
x = 581,557.83
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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.