Finding the Fourth Proportional to 1,915,642.90, 2,654,998.40 and 1,879,770.63
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Solution
The fourth proportional to 1,915,642.90, 2,654,998.40 and 1,879,770.63 is: 2,605,280.99
Step by Step Solution
- Step 1: Write the proportion equation
1,915,642.90 : 2,654,998.40 = 1,879,770.63 : x - Step 2: Convert to fraction form
1,915,642.90/2,654,998.40 = 1,879,770.63/x - Step 3: Cross multiply
1,915,642.90x = 2,654,998.40 × 1,879,770.63 - Step 4: Simplify right side
1,915,642.90x = 4,990,788,015,016.99 - Step 5: Solve for x
x = 4,990,788,015,016.99/1,915,642.90 - Step 6: Final answer
x = 2,605,280.99
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.