Finding the Fourth Proportional to 7,656,841.20, 10,565,964.76 and 4,218,889.84
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Solution
The fourth proportional to 7,656,841.20, 10,565,964.76 and 4,218,889.84 is: 5,821,805.65
Step by Step Solution
- Step 1: Write the proportion equation
7,656,841.20 : 10,565,964.76 = 4,218,889.84 : x - Step 2: Convert to fraction form
7,656,841.20/10,565,964.76 = 4,218,889.84/x - Step 3: Cross multiply
7,656,841.20x = 10,565,964.76 × 4,218,889.84 - Step 4: Simplify right side
7,656,841.20x = 44,576,641,375,762.04 - Step 5: Solve for x
x = 44,576,641,375,762.04/7,656,841.20 - Step 6: Final answer
x = 5,821,805.65
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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.