Finding the Fourth Proportional to 665,331.41, 918,166.11 and 378,852.64
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Solution
The fourth proportional to 665,331.41, 918,166.11 and 378,852.64 is: 522,821.63
Step by Step Solution
- Step 1: Write the proportion equation
665,331.41 : 918,166.11 = 378,852.64 : x - Step 2: Convert to fraction form
665,331.41/918,166.11 = 378,852.64/x - Step 3: Cross multiply
665,331.41x = 918,166.11 × 378,852.64 - Step 4: Simplify right side
665,331.41x = 347,849,650,141.20 - Step 5: Solve for x
x = 347,849,650,141.20/665,331.41 - Step 6: Final answer
x = 522,821.63
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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.