Finding the Fourth Proportional to 5,379,130.16, 7,422,984.18 and 2,931,689.90
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Solution
The fourth proportional to 5,379,130.16, 7,422,984.18 and 2,931,689.90 is: 4,045,614.64
Step by Step Solution
- Step 1: Write the proportion equation
5,379,130.16 : 7,422,984.18 = 2,931,689.90 : x - Step 2: Convert to fraction form
5,379,130.16/7,422,984.18 = 2,931,689.90/x - Step 3: Cross multiply
5,379,130.16x = 7,422,984.18 × 2,931,689.90 - Step 4: Simplify right side
5,379,130.16x = 21,761,887,766,923.24 - Step 5: Solve for x
x = 21,761,887,766,923.24/5,379,130.16 - Step 6: Final answer
x = 4,045,614.64
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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.