Finding the Fourth Proportional to 3,782,985,312.79, 5,220,842,424.38 and 2,112,557,162.23
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Solution
The fourth proportional to 3,782,985,312.79, 5,220,842,424.38 and 2,112,557,162.23 is: 2,915,509,087.28
Step by Step Solution
- Step 1: Write the proportion equation
3,782,985,312.79 : 5,220,842,424.38 = 2,112,557,162.23 : x - Step 2: Convert to fraction form
3,782,985,312.79/5,220,842,424.38 = 2,112,557,162.23/x - Step 3: Cross multiply
3,782,985,312.79x = 5,220,842,424.38 × 2,112,557,162.23 - Step 4: Simplify right side
3,782,985,312.79x = 11,029,328,056,498,206,720 - Step 5: Solve for x
x = 11,029,328,056,498,206,720/3,782,985,312.79 - Step 6: Final answer
x = 2,915,509,087.28
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1.5x scale
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.