Finding the Fourth Proportional to 7,139,581.10, 9,860,734.08 and 4,812,460.01
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Solution
The fourth proportional to 7,139,581.10, 9,860,734.08 and 4,812,460.01 is: 6,646,662.84
Step by Step Solution
- Step 1: Write the proportion equation
7,139,581.10 : 9,860,734.08 = 4,812,460.01 : x - Step 2: Convert to fraction form
7,139,581.10/9,860,734.08 = 4,812,460.01/x - Step 3: Cross multiply
7,139,581.10x = 9,860,734.08 × 4,812,460.01 - Step 4: Simplify right side
7,139,581.10x = 47,454,388,379,940.47 - Step 5: Solve for x
x = 47,454,388,379,940.47/7,139,581.10 - Step 6: Final answer
x = 6,646,662.84
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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.