Finding the Fourth Proportional to 2,567,438.78, 3,543,176.21 and 1,421,519.09
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Solution
The fourth proportional to 2,567,438.78, 3,543,176.21 and 1,421,519.09 is: 1,961,757.63
Step by Step Solution
- Step 1: Write the proportion equation
2,567,438.78 : 3,543,176.21 = 1,421,519.09 : x - Step 2: Convert to fraction form
2,567,438.78/3,543,176.21 = 1,421,519.09/x - Step 3: Cross multiply
2,567,438.78x = 3,543,176.21 × 1,421,519.09 - Step 4: Simplify right side
2,567,438.78x = 5,036,692,596,925.37 - Step 5: Solve for x
x = 5,036,692,596,925.37/2,567,438.78 - Step 6: Final answer
x = 1,961,757.63
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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.