Finding the Fourth Proportional to 3,872,448,609.80, 5,808,672,914.70 and 964,403,457.80
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Solution
The fourth proportional to 3,872,448,609.80, 5,808,672,914.70 and 964,403,457.80 is: 1,446,605,186.70
Step by Step Solution
- Step 1: Write the proportion equation
3,872,448,609.80 : 5,808,672,914.70 = 964,403,457.80 : x - Step 2: Convert to fraction form
3,872,448,609.80/5,808,672,914.70 = 964,403,457.80/x - Step 3: Cross multiply
3,872,448,609.80x = 5,808,672,914.70 × 964,403,457.80 - Step 4: Simplify right side
3,872,448,609.80x = 5,601,904,244,165,883,904 - Step 5: Solve for x
x = 5,601,904,244,165,883,904/3,872,448,609.80 - Step 6: Final answer
x = 1,446,605,186.70
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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.