Finding the Fourth Proportional to 5,745,364.80, 7,928,538.87 and 3,131,811.63
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Solution
The fourth proportional to 5,745,364.80, 7,928,538.87 and 3,131,811.63 is: 4,321,864.86
Step by Step Solution
- Step 1: Write the proportion equation
5,745,364.80 : 7,928,538.87 = 3,131,811.63 : x - Step 2: Convert to fraction form
5,745,364.80/7,928,538.87 = 3,131,811.63/x - Step 3: Cross multiply
5,745,364.80x = 7,928,538.87 × 3,131,811.63 - Step 4: Simplify right side
5,745,364.80x = 24,830,690,241,973.06 - Step 5: Solve for x
x = 24,830,690,241,973.06/5,745,364.80 - Step 6: Final answer
x = 4,321,864.86
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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.