Finding the Fourth Proportional to 1,618,699.80, 2,428,049.70 and 778,891.80
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Solution
The fourth proportional to 1,618,699.80, 2,428,049.70 and 778,891.80 is: 1,168,337.70
Step by Step Solution
- Step 1: Write the proportion equation
1,618,699.80 : 2,428,049.70 = 778,891.80 : x - Step 2: Convert to fraction form
1,618,699.80/2,428,049.70 = 778,891.80/x - Step 3: Cross multiply
1,618,699.80x = 2,428,049.70 × 778,891.80 - Step 4: Simplify right side
1,618,699.80x = 1,891,188,001,322.46 - Step 5: Solve for x
x = 1,891,188,001,322.46/1,618,699.80 - Step 6: Final answer
x = 1,168,337.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.