Finding the Fourth Proportional to 1,042,472,190.65, 1,438,639,716.76 and 613,339,435.19
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Solution
The fourth proportional to 1,042,472,190.65, 1,438,639,716.76 and 613,339,435.19 is: 846,424,949.50
Step by Step Solution
- Step 1: Write the proportion equation
1,042,472,190.65 : 1,438,639,716.76 = 613,339,435.19 : x - Step 2: Convert to fraction form
1,042,472,190.65/1,438,639,716.76 = 613,339,435.19/x - Step 3: Cross multiply
1,042,472,190.65x = 1,438,639,716.76 × 613,339,435.19 - Step 4: Simplify right side
1,042,472,190.65x = 882,374,471,321,543,168 - Step 5: Solve for x
x = 882,374,471,321,543,168/1,042,472,190.65 - Step 6: Final answer
x = 846,424,949.50
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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.