Finding the Fourth Proportional to 10,646,553.60, 15,972,163.20 and 5,257,785.60
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Solution
The fourth proportional to 10,646,553.60, 15,972,163.20 and 5,257,785.60 is: 7,887,830.45
Step by Step Solution
- Step 1: Write the proportion equation
10,646,553.60 : 15,972,163.20 = 5,257,785.60 : x - Step 2: Convert to fraction form
10,646,553.60/15,972,163.20 = 5,257,785.60/x - Step 3: Cross multiply
10,646,553.60x = 15,972,163.20 × 5,257,785.60 - Step 4: Simplify right side
10,646,553.60x = 83,978,209,673,809.91 - Step 5: Solve for x
x = 83,978,209,673,809.91/10,646,553.60 - Step 6: Final answer
x = 7,887,830.45
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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.