Finding the Fourth Proportional to 1,543,616.80, 2,315,425.20 and 421,685.80
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Solution
The fourth proportional to 1,543,616.80, 2,315,425.20 and 421,685.80 is: 632,528.70
Step by Step Solution
- Step 1: Write the proportion equation
1,543,616.80 : 2,315,425.20 = 421,685.80 : x - Step 2: Convert to fraction form
1,543,616.80/2,315,425.20 = 421,685.80/x - Step 3: Cross multiply
1,543,616.80x = 2,315,425.20 × 421,685.80 - Step 4: Simplify right side
1,543,616.80x = 976,381,927,802.16 - Step 5: Solve for x
x = 976,381,927,802.16/1,543,616.80 - Step 6: Final answer
x = 632,528.70
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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.