Finding the Fourth Proportional to 716,840.80, 989,232.70 and 394,543.98
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Solution
The fourth proportional to 716,840.80, 989,232.70 and 394,543.98 is: 544,466.50
Step by Step Solution
- Step 1: Write the proportion equation
716,840.80 : 989,232.70 = 394,543.98 : x - Step 2: Convert to fraction form
716,840.80/989,232.70 = 394,543.98/x - Step 3: Cross multiply
716,840.80x = 989,232.70 × 394,543.98 - Step 4: Simplify right side
716,840.80x = 390,295,806,357.56 - Step 5: Solve for x
x = 390,295,806,357.56/716,840.80 - Step 6: Final answer
x = 544,466.50
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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.