Finding the Fourth Proportional to 668,211.21, 921,239.43 and 530,845.91
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Solution
The fourth proportional to 668,211.21, 921,239.43 and 530,845.91 is: 731,858.69
Step by Step Solution
- Step 1: Write the proportion equation
668,211.21 : 921,239.43 = 530,845.91 : x - Step 2: Convert to fraction form
668,211.21/921,239.43 = 530,845.91/x - Step 3: Cross multiply
668,211.21x = 921,239.43 × 530,845.91 - Step 4: Simplify right side
668,211.21x = 489,036,180,892.00 - Step 5: Solve for x
x = 489,036,180,892.00/668,211.21 - Step 6: Final answer
x = 731,858.69
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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.