Finding the Fourth Proportional to 716,855.40, 989,252.62 and 394,558.56
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Solution
The fourth proportional to 716,855.40, 989,252.62 and 394,558.56 is: 544,486.50
Step by Step Solution
- Step 1: Write the proportion equation
716,855.40 : 989,252.62 = 394,558.56 : x - Step 2: Convert to fraction form
716,855.40/989,252.62 = 394,558.56/x - Step 3: Cross multiply
716,855.40x = 989,252.62 × 394,558.56 - Step 4: Simplify right side
716,855.40x = 390,318,089,223.43 - Step 5: Solve for x
x = 390,318,089,223.43/716,855.40 - Step 6: Final answer
x = 544,486.50
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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.