Finding the Fourth Proportional to 665,059.20, 917,554.08 and 378,507.60
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Solution
The fourth proportional to 665,059.20, 917,554.08 and 378,507.60 is: 522,210.94
Step by Step Solution
- Step 1: Write the proportion equation
665,059.20 : 917,554.08 = 378,507.60 : x - Step 2: Convert to fraction form
665,059.20/917,554.08 = 378,507.60/x - Step 3: Cross multiply
665,059.20x = 917,554.08 × 378,507.60 - Step 4: Simplify right side
665,059.20x = 347,301,192,691.01 - Step 5: Solve for x
x = 347,301,192,691.01/665,059.20 - Step 6: Final answer
x = 522,210.94
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1.5x scale
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.