Finding the Fourth Proportional to 7,178,114.92, 9,905,449.08 and 4,277,441.20
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Solution
The fourth proportional to 7,178,114.92, 9,905,449.08 and 4,277,441.20 is: 5,902,660.58
Step by Step Solution
- Step 1: Write the proportion equation
7,178,114.92 : 9,905,449.08 = 4,277,441.20 : x - Step 2: Convert to fraction form
7,178,114.92/9,905,449.08 = 4,277,441.20/x - Step 3: Cross multiply
7,178,114.92x = 9,905,449.08 × 4,277,441.20 - Step 4: Simplify right side
7,178,114.92x = 42,369,975,999,294.10 - Step 5: Solve for x
x = 42,369,975,999,294.10/7,178,114.92 - Step 6: Final answer
x = 5,902,660.58
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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.