Finding the Fourth Proportional to 7,641,525.31, 10,544,344.21 and 5,166,128.95
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Solution
The fourth proportional to 7,641,525.31, 10,544,344.21 and 5,166,128.95 is: 7,128,608.45
Step by Step Solution
- Step 1: Write the proportion equation
7,641,525.31 : 10,544,344.21 = 5,166,128.95 : x - Step 2: Convert to fraction form
7,641,525.31/10,544,344.21 = 5,166,128.95/x - Step 3: Cross multiply
7,641,525.31x = 10,544,344.21 × 5,166,128.95 - Step 4: Simplify right side
7,641,525.31x = 54,473,441,882,045.88 - Step 5: Solve for x
x = 54,473,441,882,045.88/7,641,525.31 - Step 6: Final answer
x = 7,128,608.45
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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.