Finding the Fourth Proportional to 6,476,643.20, 9,721,185.60 and 3,285,372.80
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Solution
The fourth proportional to 6,476,643.20, 9,721,185.60 and 3,285,372.80 is: 4,931,214.79
Step by Step Solution
- Step 1: Write the proportion equation
6,476,643.20 : 9,721,185.60 = 3,285,372.80 : x - Step 2: Convert to fraction form
6,476,643.20/9,721,185.60 = 3,285,372.80/x - Step 3: Cross multiply
6,476,643.20x = 9,721,185.60 × 3,285,372.80 - Step 4: Simplify right side
6,476,643.20x = 31,937,718,753,991.68 - Step 5: Solve for x
x = 31,937,718,753,991.68/6,476,643.20 - Step 6: Final answer
x = 4,931,214.79
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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.