Finding the Fourth Proportional to 10,255,782.88, 14,157,338.18 and 6,390,213.92
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Solution
The fourth proportional to 10,255,782.88, 14,157,338.18 and 6,390,213.92 is: 8,821,210.49
Step by Step Solution
- Step 1: Write the proportion equation
10,255,782.88 : 14,157,338.18 = 6,390,213.92 : x - Step 2: Convert to fraction form
10,255,782.88/14,157,338.18 = 6,390,213.92/x - Step 3: Cross multiply
10,255,782.88x = 14,157,338.18 × 6,390,213.92 - Step 4: Simplify right side
10,255,782.88x = 90,468,419,507,983.47 - Step 5: Solve for x
x = 90,468,419,507,983.47/10,255,782.88 - Step 6: Final answer
x = 8,821,210.49
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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.