Finding the Fourth Proportional to 1,918,770.13, 2,879,659.32 and 1,338,620.65
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Solution
The fourth proportional to 1,918,770.13, 2,879,659.32 and 1,338,620.65 is: 2,008,980.32
Step by Step Solution
- Step 1: Write the proportion equation
1,918,770.13 : 2,879,659.32 = 1,338,620.65 : x - Step 2: Convert to fraction form
1,918,770.13/2,879,659.32 = 1,338,620.65/x - Step 3: Cross multiply
1,918,770.13x = 2,879,659.32 × 1,338,620.65 - Step 4: Simplify right side
1,918,770.13x = 3,854,771,423,517.81 - Step 5: Solve for x
x = 3,854,771,423,517.81/1,918,770.13 - Step 6: Final answer
x = 2,008,980.32
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.