Finding the Fourth Proportional to 389,009,455.97, 536,837,308.56 and 212,797,453.05
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Solution
The fourth proportional to 389,009,455.97, 536,837,308.56 and 212,797,453.05 is: 293,662,815.16
Step by Step Solution
- Step 1: Write the proportion equation
389,009,455.97 : 536,837,308.56 = 212,797,453.05 : x - Step 2: Convert to fraction form
389,009,455.97/536,837,308.56 = 212,797,453.05/x - Step 3: Cross multiply
389,009,455.97x = 536,837,308.56 × 212,797,453.05 - Step 4: Simplify right side
389,009,455.97x = 114,237,611,963,784,976 - Step 5: Solve for x
x = 114,237,611,963,784,976/389,009,455.97 - Step 6: Final answer
x = 293,662,815.16
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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.