Finding the Fourth Proportional to 1,420,160,679.80, 2,130,241,019.70 and 1,075,786,911.80
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Solution
The fourth proportional to 1,420,160,679.80, 2,130,241,019.70 and 1,075,786,911.80 is: 1,613,680,367.70
Step by Step Solution
- Step 1: Write the proportion equation
1,420,160,679.80 : 2,130,241,019.70 = 1,075,786,911.80 : x - Step 2: Convert to fraction form
1,420,160,679.80/2,130,241,019.70 = 1,075,786,911.80/x - Step 3: Cross multiply
1,420,160,679.80x = 2,130,241,019.70 × 1,075,786,911.80 - Step 4: Simplify right side
1,420,160,679.80x = 2,291,685,407,972,745,984 - Step 5: Solve for x
x = 2,291,685,407,972,745,984/1,420,160,679.80 - Step 6: Final answer
x = 1,613,680,367.70
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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.