Finding the Fourth Proportional to 10,369,619.70, 15,554,429.55 and 8,480,051.70
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Solution
The fourth proportional to 10,369,619.70, 15,554,429.55 and 8,480,051.70 is: 12,720,077.55
Step by Step Solution
- Step 1: Write the proportion equation
10,369,619.70 : 15,554,429.55 = 8,480,051.70 : x - Step 2: Convert to fraction form
10,369,619.70/15,554,429.55 = 8,480,051.70/x - Step 3: Cross multiply
10,369,619.70x = 15,554,429.55 × 8,480,051.70 - Step 4: Simplify right side
10,369,619.70x = 131,902,366,748,007.73 - Step 5: Solve for x
x = 131,902,366,748,007.73/10,369,619.70 - Step 6: Final answer
x = 12,720,077.55
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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.