Finding the Fourth Proportional to 1,131,220.98, 1,561,421.49 and 648,107.82
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Solution
The fourth proportional to 1,131,220.98, 1,561,421.49 and 648,107.82 is: 894,581.60
Step by Step Solution
- Step 1: Write the proportion equation
1,131,220.98 : 1,561,421.49 = 648,107.82 : x - Step 2: Convert to fraction form
1,131,220.98/1,561,421.49 = 648,107.82/x - Step 3: Cross multiply
1,131,220.98x = 1,561,421.49 × 648,107.82 - Step 4: Simplify right side
1,131,220.98x = 1,011,969,477,985.05 - Step 5: Solve for x
x = 1,011,969,477,985.05/1,131,220.98 - Step 6: Final answer
x = 894,581.60
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1.5x scale
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.