Finding the Fourth Proportional to 449,683.13, 620,502.96 and 288,756.18
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Solution
The fourth proportional to 449,683.13, 620,502.96 and 288,756.18 is: 398,445.16
Step by Step Solution
- Step 1: Write the proportion equation
449,683.13 : 620,502.96 = 288,756.18 : x - Step 2: Convert to fraction form
449,683.13/620,502.96 = 288,756.18/x - Step 3: Cross multiply
449,683.13x = 620,502.96 × 288,756.18 - Step 4: Simplify right side
449,683.13x = 179,174,065,491.13 - Step 5: Solve for x
x = 179,174,065,491.13/449,683.13 - Step 6: Final answer
x = 398,445.16
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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.