Finding the Fourth Proportional to 515,840.40, 774,343.80 and 305,596.80
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Solution
The fourth proportional to 515,840.40, 774,343.80 and 305,596.80 is: 458,740.70
Step by Step Solution
- Step 1: Write the proportion equation
515,840.40 : 774,343.80 = 305,596.80 : x - Step 2: Convert to fraction form
515,840.40/774,343.80 = 305,596.80/x - Step 3: Cross multiply
515,840.40x = 774,343.80 × 305,596.80 - Step 4: Simplify right side
515,840.40x = 236,636,987,379.84 - Step 5: Solve for x
x = 236,636,987,379.84/515,840.40 - Step 6: Final answer
x = 458,740.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.