Finding the Fourth Proportional to 1,391,687.04, 1,920,528.08 and 788,191.68
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Solution
The fourth proportional to 1,391,687.04, 1,920,528.08 and 788,191.68 is: 1,087,704.50
Step by Step Solution
- Step 1: Write the proportion equation
1,391,687.04 : 1,920,528.08 = 788,191.68 : x - Step 2: Convert to fraction form
1,391,687.04/1,920,528.08 = 788,191.68/x - Step 3: Cross multiply
1,391,687.04x = 1,920,528.08 × 788,191.68 - Step 4: Simplify right side
1,391,687.04x = 1,513,744,253,862.37 - Step 5: Solve for x
x = 1,513,744,253,862.37/1,391,687.04 - Step 6: Final answer
x = 1,087,704.50
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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.