Finding the Fourth Proportional to 1,241,177,988.66, 1,861,206,717.31 and 355,660,804.74
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Solution
The fourth proportional to 1,241,177,988.66, 1,861,206,717.31 and 355,660,804.74 is: 533,330,662.41
Step by Step Solution
- Step 1: Write the proportion equation
1,241,177,988.66 : 1,861,206,717.31 = 355,660,804.74 : x - Step 2: Convert to fraction form
1,241,177,988.66/1,861,206,717.31 = 355,660,804.74/x - Step 3: Cross multiply
1,241,177,988.66x = 1,861,206,717.31 × 355,660,804.74 - Step 4: Simplify right side
1,241,177,988.66x = 661,958,278,865,968,256 - Step 5: Solve for x
x = 661,958,278,865,968,256/1,241,177,988.66 - Step 6: Final answer
x = 533,330,662.41
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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.