Finding the Fourth Proportional to 399,402,447.80, 599,103,671.70 and 261,652,940.60
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Solution
The fourth proportional to 399,402,447.80, 599,103,671.70 and 261,652,940.60 is: 392,479,410.90
Step by Step Solution
- Step 1: Write the proportion equation
399,402,447.80 : 599,103,671.70 = 261,652,940.60 : x - Step 2: Convert to fraction form
399,402,447.80/599,103,671.70 = 261,652,940.60/x - Step 3: Cross multiply
399,402,447.80x = 599,103,671.70 × 261,652,940.60 - Step 4: Simplify right side
399,402,447.80x = 156,757,237,424,562,016 - Step 5: Solve for x
x = 156,757,237,424,562,016/399,402,447.80 - Step 6: Final answer
x = 392,479,410.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.