Finding the Fourth Proportional to 717,462.80, 990,105.36 and 395,174.08
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Solution
The fourth proportional to 717,462.80, 990,105.36 and 395,174.08 is: 545,343.92
Step by Step Solution
- Step 1: Write the proportion equation
717,462.80 : 990,105.36 = 395,174.08 : x - Step 2: Convert to fraction form
717,462.80/990,105.36 = 395,174.08/x - Step 3: Cross multiply
717,462.80x = 990,105.36 × 395,174.08 - Step 4: Simplify right side
717,462.80x = 391,263,974,741.07 - Step 5: Solve for x
x = 391,263,974,741.07/717,462.80 - Step 6: Final answer
x = 545,343.92
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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.