Finding the Fourth Proportional to 866,205,797.80, 1,299,308,696.70 and 770,971,570.60
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Solution
The fourth proportional to 866,205,797.80, 1,299,308,696.70 and 770,971,570.60 is: 1,156,457,355.90
Step by Step Solution
- Step 1: Write the proportion equation
866,205,797.80 : 1,299,308,696.70 = 770,971,570.60 : x - Step 2: Convert to fraction form
866,205,797.80/1,299,308,696.70 = 770,971,570.60/x - Step 3: Cross multiply
866,205,797.80x = 1,299,308,696.70 × 770,971,570.60 - Step 4: Simplify right side
866,205,797.80x = 1,001,730,066,589,038,080 - Step 5: Solve for x
x = 1,001,730,066,589,038,080/866,205,797.80 - Step 6: Final answer
x = 1,156,457,355.90
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Double scale
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Similar ratio
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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.