Finding the Fourth Proportional to 528,526,771.70, 729,202,395.49 and 305,427,175.70
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Solution
The fourth proportional to 528,526,771.70, 729,202,395.49 and 305,427,175.70 is: 421,394,411.96
Step by Step Solution
- Step 1: Write the proportion equation
528,526,771.70 : 729,202,395.49 = 305,427,175.70 : x - Step 2: Convert to fraction form
528,526,771.70/729,202,395.49 = 305,427,175.70/x - Step 3: Cross multiply
528,526,771.70x = 729,202,395.49 × 305,427,175.70 - Step 4: Simplify right side
528,526,771.70x = 222,718,228,168,185,120 - Step 5: Solve for x
x = 222,718,228,168,185,120/528,526,771.70 - Step 6: Final answer
x = 421,394,411.96
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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.