Finding the Fourth Proportional to 5,438,951.28, 7,505,767.72 and 2,991,813.08
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Solution
The fourth proportional to 5,438,951.28, 7,505,767.72 and 2,991,813.08 is: 4,128,710.28
Step by Step Solution
- Step 1: Write the proportion equation
5,438,951.28 : 7,505,767.72 = 2,991,813.08 : x - Step 2: Convert to fraction form
5,438,951.28/7,505,767.72 = 2,991,813.08/x - Step 3: Cross multiply
5,438,951.28x = 7,505,767.72 × 2,991,813.08 - Step 4: Simplify right side
5,438,951.28x = 22,455,854,040,137.78 - Step 5: Solve for x
x = 22,455,854,040,137.78/5,438,951.28 - Step 6: Final answer
x = 4,128,710.28
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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.