Finding the Fourth Proportional to 660,395.43, 911,349.63 and 388,474.38
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Solution
The fourth proportional to 660,395.43, 911,349.63 and 388,474.38 is: 536,096.96
Step by Step Solution
- Step 1: Write the proportion equation
660,395.43 : 911,349.63 = 388,474.38 : x - Step 2: Convert to fraction form
660,395.43/911,349.63 = 388,474.38/x - Step 3: Cross multiply
660,395.43x = 911,349.63 × 388,474.38 - Step 4: Simplify right side
660,395.43x = 354,035,982,477.48 - Step 5: Solve for x
x = 354,035,982,477.48/660,395.43 - Step 6: Final answer
x = 536,096.96
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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.