Finding the Fourth Proportional to 1,685,419.68, 2,325,879.20 and 921,473.28
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Solution
The fourth proportional to 1,685,419.68, 2,325,879.20 and 921,473.28 is: 1,271,633.15
Step by Step Solution
- Step 1: Write the proportion equation
1,685,419.68 : 2,325,879.20 = 921,473.28 : x - Step 2: Convert to fraction form
1,685,419.68/2,325,879.20 = 921,473.28/x - Step 3: Cross multiply
1,685,419.68x = 2,325,879.20 × 921,473.28 - Step 4: Simplify right side
1,685,419.68x = 2,143,235,535,307.78 - Step 5: Solve for x
x = 2,143,235,535,307.78/1,685,419.68 - Step 6: Final answer
x = 1,271,633.15
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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.