Finding the Fourth Proportional to 3,890,622,156.68, 5,369,051,478.48 and 2,106,475,391
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Solution
The fourth proportional to 3,890,622,156.68, 5,369,051,478.48 and 2,106,475,391 is: 2,906,932,196.70
Step by Step Solution
- Step 1: Write the proportion equation
3,890,622,156.68 : 5,369,051,478.48 = 2,106,475,391 : x - Step 2: Convert to fraction form
3,890,622,156.68/5,369,051,478.48 = 2,106,475,391/x - Step 3: Cross multiply
3,890,622,156.68x = 5,369,051,478.48 × 2,106,475,391 - Step 4: Simplify right side
3,890,622,156.68x = 11,309,774,812,430,284,800 - Step 5: Solve for x
x = 11,309,774,812,430,284,800/3,890,622,156.68 - Step 6: Final answer
x = 2,906,932,196.70
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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.