Finding the Fourth Proportional to 5,218,178.63, 7,201,427.11 and 3,013,134.53
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Solution
The fourth proportional to 5,218,178.63, 7,201,427.11 and 3,013,134.53 is: 4,158,322.32
Step by Step Solution
- Step 1: Write the proportion equation
5,218,178.63 : 7,201,427.11 = 3,013,134.53 : x - Step 2: Convert to fraction form
5,218,178.63/7,201,427.11 = 3,013,134.53/x - Step 3: Cross multiply
5,218,178.63x = 7,201,427.11 × 3,013,134.53 - Step 4: Simplify right side
5,218,178.63x = 21,698,868,646,879.14 - Step 5: Solve for x
x = 21,698,868,646,879.14/5,218,178.63 - Step 6: Final answer
x = 4,158,322.32
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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.