Finding the Fourth Proportional to 1,271,505.19, 1,754,235.94 and 812,888.21
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Solution
The fourth proportional to 1,271,505.19, 1,754,235.94 and 812,888.21 is: 1,121,503.64
Step by Step Solution
- Step 1: Write the proportion equation
1,271,505.19 : 1,754,235.94 = 812,888.21 : x - Step 2: Convert to fraction form
1,271,505.19/1,754,235.94 = 812,888.21/x - Step 3: Cross multiply
1,271,505.19x = 1,754,235.94 × 812,888.21 - Step 4: Simplify right side
1,271,505.19x = 1,425,997,702,380.87 - Step 5: Solve for x
x = 1,425,997,702,380.87/1,271,505.19 - Step 6: Final answer
x = 1,121,503.64
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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.