Finding the Fourth Proportional to 716,861.93, 989,261.61 and 394,565.09
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Solution
The fourth proportional to 716,861.93, 989,261.61 and 394,565.09 is: 544,495.50
Step by Step Solution
- Step 1: Write the proportion equation
716,861.93 : 989,261.61 = 394,565.09 : x - Step 2: Convert to fraction form
716,861.93/989,261.61 = 394,565.09/x - Step 3: Cross multiply
716,861.93x = 989,261.61 × 394,565.09 - Step 4: Simplify right side
716,861.93x = 390,328,096,183.20 - Step 5: Solve for x
x = 390,328,096,183.20/716,861.93 - Step 6: Final answer
x = 544,495.50
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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.