Finding the Fourth Proportional to 5,078,156.42, 7,007,855.97 and 2,902,746.74
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Solution
The fourth proportional to 5,078,156.42, 7,007,855.97 and 2,902,746.74 is: 4,005,790.56
Step by Step Solution
- Step 1: Write the proportion equation
5,078,156.42 : 7,007,855.97 = 2,902,746.74 : x - Step 2: Convert to fraction form
5,078,156.42/7,007,855.97 = 2,902,746.74/x - Step 3: Cross multiply
5,078,156.42x = 7,007,855.97 × 2,902,746.74 - Step 4: Simplify right side
5,078,156.42x = 20,342,031,071,307.04 - Step 5: Solve for x
x = 20,342,031,071,307.04/5,078,156.42 - Step 6: Final answer
x = 4,005,790.56
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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.