Finding the Fourth Proportional to 719,861.81, 993,403.20 and 397,564.98
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Solution
The fourth proportional to 719,861.81, 993,403.20 and 397,564.98 is: 548,636.31
Step by Step Solution
- Step 1: Write the proportion equation
719,861.81 : 993,403.20 = 397,564.98 : x - Step 2: Convert to fraction form
719,861.81/993,403.20 = 397,564.98/x - Step 3: Cross multiply
719,861.81x = 993,403.20 × 397,564.98 - Step 4: Simplify right side
719,861.81x = 394,942,326,132.93 - Step 5: Solve for x
x = 394,942,326,132.93/719,861.81 - Step 6: Final answer
x = 548,636.31
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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.