Finding the Fourth Proportional to 7,212,981.68, 9,953,914.74 and 4,157,392.76
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Solution
The fourth proportional to 7,212,981.68, 9,953,914.74 and 4,157,392.76 is: 5,737,202.02
Step by Step Solution
- Step 1: Write the proportion equation
7,212,981.68 : 9,953,914.74 = 4,157,392.76 : x - Step 2: Convert to fraction form
7,212,981.68/9,953,914.74 = 4,157,392.76/x - Step 3: Cross multiply
7,212,981.68x = 9,953,914.74 × 4,157,392.76 - Step 4: Simplify right side
7,212,981.68x = 41,382,333,073,733.28 - Step 5: Solve for x
x = 41,382,333,073,733.28/7,212,981.68 - Step 6: Final answer
x = 5,737,202.02
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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.