Finding the Fourth Proportional to 1,147,397,115.15, 1,721,095,672.73 and 371,121,246.45
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Solution
The fourth proportional to 1,147,397,115.15, 1,721,095,672.73 and 371,121,246.45 is: 556,681,869.68
Step by Step Solution
- Step 1: Write the proportion equation
1,147,397,115.15 : 1,721,095,672.73 = 371,121,246.45 : x - Step 2: Convert to fraction form
1,147,397,115.15/1,721,095,672.73 = 371,121,246.45/x - Step 3: Cross multiply
1,147,397,115.15x = 1,721,095,672.73 × 371,121,246.45 - Step 4: Simplify right side
1,147,397,115.15x = 638,735,171,321,403,264 - Step 5: Solve for x
x = 638,735,171,321,403,264/1,147,397,115.15 - Step 6: Final answer
x = 556,681,869.68
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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.