Finding the Fourth Proportional to 1,457,528.15, 2,011,391.61 and 812,990.09
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Solution
The fourth proportional to 1,457,528.15, 2,011,391.61 and 812,990.09 is: 1,121,927.87
Step by Step Solution
- Step 1: Write the proportion equation
1,457,528.15 : 2,011,391.61 = 812,990.09 : x - Step 2: Convert to fraction form
1,457,528.15/2,011,391.61 = 812,990.09/x - Step 3: Cross multiply
1,457,528.15x = 2,011,391.61 × 812,990.09 - Step 4: Simplify right side
1,457,528.15x = 1,635,241,446,039.15 - Step 5: Solve for x
x = 1,635,241,446,039.15/1,457,528.15 - Step 6: Final answer
x = 1,121,927.87
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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.