Finding the Fourth Proportional to 716,121.36, 988,227.74 and 393,831.45
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Solution
The fourth proportional to 716,121.36, 988,227.74 and 393,831.45 is: 543,476.55
Step by Step Solution
- Step 1: Write the proportion equation
716,121.36 : 988,227.74 = 393,831.45 : x - Step 2: Convert to fraction form
716,121.36/988,227.74 = 393,831.45/x - Step 3: Cross multiply
716,121.36x = 988,227.74 × 393,831.45 - Step 4: Simplify right side
716,121.36x = 389,195,164,759.00 - Step 5: Solve for x
x = 389,195,164,759.00/716,121.36 - Step 6: Final answer
x = 543,476.55
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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.