Finding the Fourth Proportional to 1,138,352.18, 1,570,864.20 and 629,021.75
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Solution
The fourth proportional to 1,138,352.18, 1,570,864.20 and 629,021.75 is: 868,015.86
Step by Step Solution
- Step 1: Write the proportion equation
1,138,352.18 : 1,570,864.20 = 629,021.75 : x - Step 2: Convert to fraction form
1,138,352.18/1,570,864.20 = 629,021.75/x - Step 3: Cross multiply
1,138,352.18x = 1,570,864.20 × 629,021.75 - Step 4: Simplify right side
1,138,352.18x = 988,107,748,096.35 - Step 5: Solve for x
x = 988,107,748,096.35/1,138,352.18 - Step 6: Final answer
x = 868,015.86
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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.