Finding the Fourth Proportional to 18,144,419.20, 27,216,628.80 and 4,681,247.20
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Solution
The fourth proportional to 18,144,419.20, 27,216,628.80 and 4,681,247.20 is: 7,021,870.80
Step by Step Solution
- Step 1: Write the proportion equation
18,144,419.20 : 27,216,628.80 = 4,681,247.20 : x - Step 2: Convert to fraction form
18,144,419.20/27,216,628.80 = 4,681,247.20/x - Step 3: Cross multiply
18,144,419.20x = 27,216,628.80 × 4,681,247.20 - Step 4: Simplify right side
18,144,419.20x = 127,407,767,363,439.38 - Step 5: Solve for x
x = 127,407,767,363,439.38/18,144,419.20 - Step 6: Final answer
x = 7,021,870.80
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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.