Finding the Fourth Proportional to 7,129,301.85, 9,838,441.74 and 3,866,115.75
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Solution
The fourth proportional to 7,129,301.85, 9,838,441.74 and 3,866,115.75 is: 5,335,242.54
Step by Step Solution
- Step 1: Write the proportion equation
7,129,301.85 : 9,838,441.74 = 3,866,115.75 : x - Step 2: Convert to fraction form
7,129,301.85/9,838,441.74 = 3,866,115.75/x - Step 3: Cross multiply
7,129,301.85x = 9,838,441.74 × 3,866,115.75 - Step 4: Simplify right side
7,129,301.85x = 38,036,554,497,948.62 - Step 5: Solve for x
x = 38,036,554,497,948.62/7,129,301.85 - Step 6: Final answer
x = 5,335,242.54
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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.