Finding the Fourth Proportional to 947,728.05, 1,421,666.87 and 316,644.09
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Solution
The fourth proportional to 947,728.05, 1,421,666.87 and 316,644.09 is: 474,991.12
Step by Step Solution
- Step 1: Write the proportion equation
947,728.05 : 1,421,666.87 = 316,644.09 : x - Step 2: Convert to fraction form
947,728.05/1,421,666.87 = 316,644.09/x - Step 3: Cross multiply
947,728.05x = 1,421,666.87 × 316,644.09 - Step 4: Simplify right side
947,728.05x = 450,162,410,751.08 - Step 5: Solve for x
x = 450,162,410,751.08/947,728.05 - Step 6: Final answer
x = 474,991.12
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.