Finding the Fourth Proportional to 7,881,330.20, 11,821,995.30 and 3,087,426.20
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Solution
The fourth proportional to 7,881,330.20, 11,821,995.30 and 3,087,426.20 is: 4,631,139.30
Step by Step Solution
- Step 1: Write the proportion equation
7,881,330.20 : 11,821,995.30 = 3,087,426.20 : x - Step 2: Convert to fraction form
7,881,330.20/11,821,995.30 = 3,087,426.20/x - Step 3: Cross multiply
7,881,330.20x = 11,821,995.30 × 3,087,426.20 - Step 4: Simplify right side
7,881,330.20x = 36,499,538,025,496.87 - Step 5: Solve for x
x = 36,499,538,025,496.87/7,881,330.20 - Step 6: Final answer
x = 4,631,139.30
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1.5x scale
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.