Finding the Fourth Proportional to 530,361.36, 731,884.56 and 288,638.70
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Solution
The fourth proportional to 530,361.36, 731,884.56 and 288,638.70 is: 398,313.72
Step by Step Solution
- Step 1: Write the proportion equation
530,361.36 : 731,884.56 = 288,638.70 : x - Step 2: Convert to fraction form
530,361.36/731,884.56 = 288,638.70/x - Step 3: Cross multiply
530,361.36x = 731,884.56 × 288,638.70 - Step 4: Simplify right side
530,361.36x = 211,250,207,948.47 - Step 5: Solve for x
x = 211,250,207,948.47/530,361.36 - Step 6: Final answer
x = 398,313.72
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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.