Finding the Fourth Proportional to 1,120,727,701.20, 1,681,091,551.80 and 713,588,782.80
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Solution
The fourth proportional to 1,120,727,701.20, 1,681,091,551.80 and 713,588,782.80 is: 1,070,383,174.20
Step by Step Solution
- Step 1: Write the proportion equation
1,120,727,701.20 : 1,681,091,551.80 = 713,588,782.80 : x - Step 2: Convert to fraction form
1,120,727,701.20/1,681,091,551.80 = 713,588,782.80/x - Step 3: Cross multiply
1,120,727,701.20x = 1,681,091,551.80 × 713,588,782.80 - Step 4: Simplify right side
1,120,727,701.20x = 1,199,608,074,224,325,120 - Step 5: Solve for x
x = 1,199,608,074,224,325,120/1,120,727,701.20 - Step 6: Final answer
x = 1,070,383,174.20
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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.