Finding the Fourth Proportional to 3,839,919.18, 5,298,986.79 and 2,121,002.70
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Solution
The fourth proportional to 3,839,919.18, 5,298,986.79 and 2,121,002.70 is: 2,926,927.56
Step by Step Solution
- Step 1: Write the proportion equation
3,839,919.18 : 5,298,986.79 = 2,121,002.70 : x - Step 2: Convert to fraction form
3,839,919.18/5,298,986.79 = 2,121,002.70/x - Step 3: Cross multiply
3,839,919.18x = 5,298,986.79 × 2,121,002.70 - Step 4: Simplify right side
3,839,919.18x = 11,239,165,288,854.33 - Step 5: Solve for x
x = 11,239,165,288,854.33/3,839,919.18 - Step 6: Final answer
x = 2,926,927.56
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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.