Finding the Fourth Proportional to 10,478,178.68, 15,717,268.74 and 2,905,144.64
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Solution
The fourth proportional to 10,478,178.68, 15,717,268.74 and 2,905,144.64 is: 4,357,717.16
Step by Step Solution
- Step 1: Write the proportion equation
10,478,178.68 : 15,717,268.74 = 2,905,144.64 : x - Step 2: Convert to fraction form
10,478,178.68/15,717,268.74 = 2,905,144.64/x - Step 3: Cross multiply
10,478,178.68x = 15,717,268.74 × 2,905,144.64 - Step 4: Simplify right side
10,478,178.68x = 45,660,939,035,450.55 - Step 5: Solve for x
x = 45,660,939,035,450.55/10,478,178.68 - Step 6: Final answer
x = 4,357,717.16
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.