Finding the Fourth Proportional to 1,999,892,779.92, 2,987,675,540.28 and 1,294,639,512.48
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Solution
The fourth proportional to 1,999,892,779.92, 2,987,675,540.28 and 1,294,639,512.48 is: 1,934,085,088.84
Step by Step Solution
- Step 1: Write the proportion equation
1,999,892,779.92 : 2,987,675,540.28 = 1,294,639,512.48 : x - Step 2: Convert to fraction form
1,999,892,779.92/2,987,675,540.28 = 1,294,639,512.48/x - Step 3: Cross multiply
1,999,892,779.92x = 2,987,675,540.28 × 1,294,639,512.48 - Step 4: Simplify right side
1,999,892,779.92x = 3,867,962,804,916,519,936 - Step 5: Solve for x
x = 3,867,962,804,916,519,936/1,999,892,779.92 - Step 6: Final answer
x = 1,934,085,088.84
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.