Finding the Fourth Proportional to 5,202,045.38, 7,178,660.43 and 2,878,798.08
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Solution
The fourth proportional to 5,202,045.38, 7,178,660.43 and 2,878,798.08 is: 3,972,651.59
Step by Step Solution
- Step 1: Write the proportion equation
5,202,045.38 : 7,178,660.43 = 2,878,798.08 : x - Step 2: Convert to fraction form
5,202,045.38/7,178,660.43 = 2,878,798.08/x - Step 3: Cross multiply
5,202,045.38x = 7,178,660.43 × 2,878,798.08 - Step 4: Simplify right side
5,202,045.38x = 20,665,913,862,855.97 - Step 5: Solve for x
x = 20,665,913,862,855.97/5,202,045.38 - Step 6: Final answer
x = 3,972,651.59
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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.