Finding the Fourth Proportional to 520,739.56, 718,586.70 and 291,257.08
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Solution
The fourth proportional to 520,739.56, 718,586.70 and 291,257.08 is: 401,915.81
Step by Step Solution
- Step 1: Write the proportion equation
520,739.56 : 718,586.70 = 291,257.08 : x - Step 2: Convert to fraction form
520,739.56/718,586.70 = 291,257.08/x - Step 3: Cross multiply
520,739.56x = 718,586.70 × 291,257.08 - Step 4: Simplify right side
520,739.56x = 209,293,463,968.84 - Step 5: Solve for x
x = 209,293,463,968.84/520,739.56 - Step 6: Final answer
x = 401,915.81
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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.