Finding the Fourth Proportional to 1,138,824.18, 1,571,515.70 and 629,493.75
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Solution
The fourth proportional to 1,138,824.18, 1,571,515.70 and 629,493.75 is: 868,667.28
Step by Step Solution
- Step 1: Write the proportion equation
1,138,824.18 : 1,571,515.70 = 629,493.75 : x - Step 2: Convert to fraction form
1,138,824.18/1,571,515.70 = 629,493.75/x - Step 3: Cross multiply
1,138,824.18x = 1,571,515.70 × 629,493.75 - Step 4: Simplify right side
1,138,824.18x = 989,259,308,029.41 - Step 5: Solve for x
x = 989,259,308,029.41/1,138,824.18 - Step 6: Final answer
x = 868,667.28
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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.