Finding the Fourth Proportional to 1,431,243.08, 1,975,119.76 and 786,729.32
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Solution
The fourth proportional to 1,431,243.08, 1,975,119.76 and 786,729.32 is: 1,085,688.83
Step by Step Solution
- Step 1: Write the proportion equation
1,431,243.08 : 1,975,119.76 = 786,729.32 : x - Step 2: Convert to fraction form
1,431,243.08/1,975,119.76 = 786,729.32/x - Step 3: Cross multiply
1,431,243.08x = 1,975,119.76 × 786,729.32 - Step 4: Simplify right side
1,431,243.08x = 1,553,884,625,703.36 - Step 5: Solve for x
x = 1,553,884,625,703.36/1,431,243.08 - Step 6: Final answer
x = 1,085,688.83
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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.