Finding the Fourth Proportional to 399,413,316.80, 599,119,975.20 and 331,332,881.60
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Solution
The fourth proportional to 399,413,316.80, 599,119,975.20 and 331,332,881.60 is: 496,999,322.40
Step by Step Solution
- Step 1: Write the proportion equation
399,413,316.80 : 599,119,975.20 = 331,332,881.60 : x - Step 2: Convert to fraction form
399,413,316.80/599,119,975.20 = 331,332,881.60/x - Step 3: Cross multiply
399,413,316.80x = 599,119,975.20 × 331,332,881.60 - Step 4: Simplify right side
399,413,316.80x = 198,508,147,807,136,576 - Step 5: Solve for x
x = 198,508,147,807,136,576/399,413,316.80 - Step 6: Final answer
x = 496,999,322.40
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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.