Finding the Fourth Proportional to 2,147,097.39, 2,961,758.95 and 1,287,158.05
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Solution
The fourth proportional to 2,147,097.39, 2,961,758.95 and 1,287,158.05 is: 1,775,537.47
Step by Step Solution
- Step 1: Write the proportion equation
2,147,097.39 : 2,961,758.95 = 1,287,158.05 : x - Step 2: Convert to fraction form
2,147,097.39/2,961,758.95 = 1,287,158.05/x - Step 3: Cross multiply
2,147,097.39x = 2,961,758.95 × 1,287,158.05 - Step 4: Simplify right side
2,147,097.39x = 3,812,251,874,652.05 - Step 5: Solve for x
x = 3,812,251,874,652.05/2,147,097.39 - Step 6: Final answer
x = 1,775,537.47
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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.