Finding the Fourth Proportional to 1,259,714,220.40, 1,889,571,330.60 and 441,720,233.20
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Solution
The fourth proportional to 1,259,714,220.40, 1,889,571,330.60 and 441,720,233.20 is: 662,580,349.80
Step by Step Solution
- Step 1: Write the proportion equation
1,259,714,220.40 : 1,889,571,330.60 = 441,720,233.20 : x - Step 2: Convert to fraction form
1,259,714,220.40/1,889,571,330.60 = 441,720,233.20/x - Step 3: Cross multiply
1,259,714,220.40x = 1,889,571,330.60 × 441,720,233.20 - Step 4: Simplify right side
1,259,714,220.40x = 834,661,888,800,666,240 - Step 5: Solve for x
x = 834,661,888,800,666,240/1,259,714,220.40 - Step 6: Final answer
x = 662,580,349.80
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Half scale
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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.