Finding the Fourth Proportional to 2,528,312,400.21, 3,489,045,412.20 and 1,399,284,355.58
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Solution
The fourth proportional to 2,528,312,400.21, 3,489,045,412.20 and 1,399,284,355.58 is: 1,930,998,187.09
Step by Step Solution
- Step 1: Write the proportion equation
2,528,312,400.21 : 3,489,045,412.20 = 1,399,284,355.58 : x - Step 2: Convert to fraction form
2,528,312,400.21/3,489,045,412.20 = 1,399,284,355.58/x - Step 3: Cross multiply
2,528,312,400.21x = 3,489,045,412.20 × 1,399,284,355.58 - Step 4: Simplify right side
2,528,312,400.21x = 4,882,166,661,197,964,288 - Step 5: Solve for x
x = 4,882,166,661,197,964,288/2,528,312,400.21 - Step 6: Final answer
x = 1,930,998,187.09
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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.