Finding the Fourth Proportional to 1,115,757,289.97, 1,673,878,072.79 and 339,382,772.53
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Solution
The fourth proportional to 1,115,757,289.97, 1,673,878,072.79 and 339,382,772.53 is: 509,147,810.48
Step by Step Solution
- Step 1: Write the proportion equation
1,115,757,289.97 : 1,673,878,072.79 = 339,382,772.53 : x - Step 2: Convert to fraction form
1,115,757,289.97/1,673,878,072.79 = 339,382,772.53/x - Step 3: Cross multiply
1,115,757,289.97x = 1,673,878,072.79 × 339,382,772.53 - Step 4: Simplify right side
1,115,757,289.97x = 568,085,381,220,643,264 - Step 5: Solve for x
x = 568,085,381,220,643,264/1,115,757,289.97 - Step 6: Final answer
x = 509,147,810.48
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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.