Finding the Fourth Proportional to 9,115,686.36, 12,578,249.79 and 5,247,460.08
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Solution
The fourth proportional to 9,115,686.36, 12,578,249.79 and 5,247,460.08 is: 7,240,690.50
Step by Step Solution
- Step 1: Write the proportion equation
9,115,686.36 : 12,578,249.79 = 5,247,460.08 : x - Step 2: Convert to fraction form
9,115,686.36/12,578,249.79 = 5,247,460.08/x - Step 3: Cross multiply
9,115,686.36x = 12,578,249.79 × 5,247,460.08 - Step 4: Simplify right side
9,115,686.36x = 66,003,863,649,293.38 - Step 5: Solve for x
x = 66,003,863,649,293.38/9,115,686.36 - Step 6: Final answer
x = 7,240,690.50
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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.