Finding the Fourth Proportional to 479,682,257.14, 661,966,078.54 and 281,447,124.67
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Solution
The fourth proportional to 479,682,257.14, 661,966,078.54 and 281,447,124.67 is: 388,399,709.72
Step by Step Solution
- Step 1: Write the proportion equation
479,682,257.14 : 661,966,078.54 = 281,447,124.67 : x - Step 2: Convert to fraction form
479,682,257.14/661,966,078.54 = 281,447,124.67/x - Step 3: Cross multiply
479,682,257.14x = 661,966,078.54 × 281,447,124.67 - Step 4: Simplify right side
479,682,257.14x = 186,308,449,430,848,576 - Step 5: Solve for x
x = 186,308,449,430,848,576/479,682,257.14 - Step 6: Final answer
x = 388,399,709.72
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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.