Finding the Fourth Proportional to 678,253.14, 936,004.14 and 406,606.68
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Solution
The fourth proportional to 678,253.14, 936,004.14 and 406,606.68 is: 561,126.09
Step by Step Solution
- Step 1: Write the proportion equation
678,253.14 : 936,004.14 = 406,606.68 : x - Step 2: Convert to fraction form
678,253.14/936,004.14 = 406,606.68/x - Step 3: Cross multiply
678,253.14x = 936,004.14 × 406,606.68 - Step 4: Simplify right side
678,253.14x = 380,585,535,831.66 - Step 5: Solve for x
x = 380,585,535,831.66/678,253.14 - Step 6: Final answer
x = 561,126.09
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1.5x scale
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.