Finding the Fourth Proportional to 1,114,676.99, 1,538,349.12 and 631,328.12
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Solution
The fourth proportional to 1,114,676.99, 1,538,349.12 and 631,328.12 is: 871,286.54
Step by Step Solution
- Step 1: Write the proportion equation
1,114,676.99 : 1,538,349.12 = 631,328.12 : x - Step 2: Convert to fraction form
1,114,676.99/1,538,349.12 = 631,328.12/x - Step 3: Cross multiply
1,114,676.99x = 1,538,349.12 × 631,328.12 - Step 4: Simplify right side
1,114,676.99x = 971,203,061,679.13 - Step 5: Solve for x
x = 971,203,061,679.13/1,114,676.99 - Step 6: Final answer
x = 871,286.54
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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.