Finding the Fourth Proportional to 1,379,986,912.48, 1,904,548,936.08 and 785,415,964
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Solution
The fourth proportional to 1,379,986,912.48, 1,904,548,936.08 and 785,415,964 is: 1,083,969,076.15
Step by Step Solution
- Step 1: Write the proportion equation
1,379,986,912.48 : 1,904,548,936.08 = 785,415,964 : x - Step 2: Convert to fraction form
1,379,986,912.48/1,904,548,936.08 = 785,415,964/x - Step 3: Cross multiply
1,379,986,912.48x = 1,904,548,936.08 × 785,415,964 - Step 4: Simplify right side
1,379,986,912.48x = 1,495,863,138,616,447,488 - Step 5: Solve for x
x = 1,495,863,138,616,447,488/1,379,986,912.48 - Step 6: Final answer
x = 1,083,969,076.15
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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.