Finding the Fourth Proportional to 1,079,593,331.80, 1,619,389,997.70 and 671,446,643.80
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Solution
The fourth proportional to 1,079,593,331.80, 1,619,389,997.70 and 671,446,643.80 is: 1,007,169,965.70
Step by Step Solution
- Step 1: Write the proportion equation
1,079,593,331.80 : 1,619,389,997.70 = 671,446,643.80 : x - Step 2: Convert to fraction form
1,079,593,331.80/1,619,389,997.70 = 671,446,643.80/x - Step 3: Cross multiply
1,079,593,331.80x = 1,619,389,997.70 × 671,446,643.80 - Step 4: Simplify right side
1,079,593,331.80x = 1,087,333,978,958,954,624 - Step 5: Solve for x
x = 1,087,333,978,958,954,624/1,079,593,331.80 - Step 6: Final answer
x = 1,007,169,965.70
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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.