Finding the Fourth Proportional to 1,065,312,091.80, 1,597,968,137.70 and 299,407,195.80
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Solution
The fourth proportional to 1,065,312,091.80, 1,597,968,137.70 and 299,407,195.80 is: 449,110,793.70
Step by Step Solution
- Step 1: Write the proportion equation
1,065,312,091.80 : 1,597,968,137.70 = 299,407,195.80 : x - Step 2: Convert to fraction form
1,065,312,091.80/1,597,968,137.70 = 299,407,195.80/x - Step 3: Cross multiply
1,065,312,091.80x = 1,597,968,137.70 × 299,407,195.80 - Step 4: Simplify right side
1,065,312,091.80x = 478,443,159,086,505,280 - Step 5: Solve for x
x = 478,443,159,086,505,280/1,065,312,091.80 - Step 6: Final answer
x = 449,110,793.70
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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.