Finding the Fourth Proportional to 3,849,356,988.05, 5,311,202,181.50 and 2,178,606,128.63
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Solution
The fourth proportional to 3,849,356,988.05, 5,311,202,181.50 and 2,178,606,128.63 is: 3,005,961,166.74
Step by Step Solution
- Step 1: Write the proportion equation
3,849,356,988.05 : 5,311,202,181.50 = 2,178,606,128.63 : x - Step 2: Convert to fraction form
3,849,356,988.05/5,311,202,181.50 = 2,178,606,128.63/x - Step 3: Cross multiply
3,849,356,988.05x = 5,311,202,181.50 × 2,178,606,128.63 - Step 4: Simplify right side
3,849,356,988.05x = 11,571,017,622,987,814,912 - Step 5: Solve for x
x = 11,571,017,622,987,814,912/3,849,356,988.05 - Step 6: Final answer
x = 3,005,961,166.74
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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.