Finding the Fourth Proportional to 1,138,908.96, 1,571,773.68 and 629,658.72
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Solution
The fourth proportional to 1,138,908.96, 1,571,773.68 and 629,658.72 is: 868,972.88
Step by Step Solution
- Step 1: Write the proportion equation
1,138,908.96 : 1,571,773.68 = 629,658.72 : x - Step 2: Convert to fraction form
1,138,908.96/1,571,773.68 = 629,658.72/x - Step 3: Cross multiply
1,138,908.96x = 1,571,773.68 × 629,658.72 - Step 4: Simplify right side
1,138,908.96x = 989,681,003,478.49 - Step 5: Solve for x
x = 989,681,003,478.49/1,138,908.96 - Step 6: Final answer
x = 868,972.88
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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.