Finding the Fourth Proportional to 1,561,285.91, 2,153,914.79 and 1,045,206.06
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Solution
The fourth proportional to 1,561,285.91, 2,153,914.79 and 1,045,206.06 is: 1,441,942.68
Step by Step Solution
- Step 1: Write the proportion equation
1,561,285.91 : 2,153,914.79 = 1,045,206.06 : x - Step 2: Convert to fraction form
1,561,285.91/2,153,914.79 = 1,045,206.06/x - Step 3: Cross multiply
1,561,285.91x = 2,153,914.79 × 1,045,206.06 - Step 4: Simplify right side
1,561,285.91x = 2,251,284,780,462.05 - Step 5: Solve for x
x = 2,251,284,780,462.05/1,561,285.91 - Step 6: Final answer
x = 1,441,942.68
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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.