Finding the Fourth Proportional to 5,161,475.12, 7,120,789.80 and 2,985,614.24
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Solution
The fourth proportional to 5,161,475.12, 7,120,789.80 and 2,985,614.24 is: 4,118,964.24
Step by Step Solution
- Step 1: Write the proportion equation
5,161,475.12 : 7,120,789.80 = 2,985,614.24 : x - Step 2: Convert to fraction form
5,161,475.12/7,120,789.80 = 2,985,614.24/x - Step 3: Cross multiply
5,161,475.12x = 7,120,789.80 × 2,985,614.24 - Step 4: Simplify right side
5,161,475.12x = 21,259,931,426,926.75 - Step 5: Solve for x
x = 21,259,931,426,926.75/5,161,475.12 - Step 6: Final answer
x = 4,118,964.24
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1.5x scale
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.