Finding the Fourth Proportional to 665,257.58, 918,056.34 and 378,777.80
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Solution
The fourth proportional to 665,257.58, 918,056.34 and 378,777.80 is: 522,713.86
Step by Step Solution
- Step 1: Write the proportion equation
665,257.58 : 918,056.34 = 378,777.80 : x - Step 2: Convert to fraction form
665,257.58/918,056.34 = 378,777.80/x - Step 3: Cross multiply
665,257.58x = 918,056.34 × 378,777.80 - Step 4: Simplify right side
665,257.58x = 347,739,360,741.25 - Step 5: Solve for x
x = 347,739,360,741.25/665,257.58 - Step 6: Final answer
x = 522,713.86
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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.