Finding the Fourth Proportional to 11,878,409.28, 16,392,204.84 and 6,445,901.28
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Solution
The fourth proportional to 11,878,409.28, 16,392,204.84 and 6,445,901.28 is: 8,895,343.78
Step by Step Solution
- Step 1: Write the proportion equation
11,878,409.28 : 16,392,204.84 = 6,445,901.28 : x - Step 2: Convert to fraction form
11,878,409.28/16,392,204.84 = 6,445,901.28/x - Step 3: Cross multiply
11,878,409.28x = 16,392,204.84 × 6,445,901.28 - Step 4: Simplify right side
11,878,409.28x = 105,662,534,160,178.20 - Step 5: Solve for x
x = 105,662,534,160,178.20/11,878,409.28 - Step 6: Final answer
x = 8,895,343.78
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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.