Finding the Fourth Proportional to 3,878,079,550.47, 5,817,936,416.99 and 1,257,679,331.55
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Solution
The fourth proportional to 3,878,079,550.47, 5,817,936,416.99 and 1,257,679,331.55 is: 1,886,783,983.85
Step by Step Solution
- Step 1: Write the proportion equation
3,878,079,550.47 : 5,817,936,416.99 = 1,257,679,331.55 : x - Step 2: Convert to fraction form
3,878,079,550.47/5,817,936,416.99 = 1,257,679,331.55/x - Step 3: Cross multiply
3,878,079,550.47x = 5,817,936,416.99 × 1,257,679,331.55 - Step 4: Simplify right side
3,878,079,550.47x = 7,317,098,383,914,096,640 - Step 5: Solve for x
x = 7,317,098,383,914,096,640/3,878,079,550.47 - Step 6: Final answer
x = 1,886,783,983.85
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.