Finding the Fourth Proportional to 806,936,701.20, 1,210,405,051.80 and 480,419,350.80
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Solution
The fourth proportional to 806,936,701.20, 1,210,405,051.80 and 480,419,350.80 is: 720,629,026.20
Step by Step Solution
- Step 1: Write the proportion equation
806,936,701.20 : 1,210,405,051.80 = 480,419,350.80 : x - Step 2: Convert to fraction form
806,936,701.20/1,210,405,051.80 = 480,419,350.80/x - Step 3: Cross multiply
806,936,701.20x = 1,210,405,051.80 × 480,419,350.80 - Step 4: Simplify right side
806,936,701.20x = 581,502,009,190,796,416 - Step 5: Solve for x
x = 581,502,009,190,796,416/806,936,701.20 - Step 6: Final answer
x = 720,629,026.20
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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.