Finding the Fourth Proportional to 1,207,997.16, 1,667,037.14 and 664,142.20
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Solution
The fourth proportional to 1,207,997.16, 1,667,037.14 and 664,142.20 is: 916,516.82
Step by Step Solution
- Step 1: Write the proportion equation
1,207,997.16 : 1,667,037.14 = 664,142.20 : x - Step 2: Convert to fraction form
1,207,997.16/1,667,037.14 = 664,142.20/x - Step 3: Cross multiply
1,207,997.16x = 1,667,037.14 × 664,142.20 - Step 4: Simplify right side
1,207,997.16x = 1,107,149,713,641.31 - Step 5: Solve for x
x = 1,107,149,713,641.31/1,207,997.16 - Step 6: Final answer
x = 916,516.82
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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.