Finding the Fourth Proportional to 1,259,714,276.80, 1,889,571,415.20 and 892,382,257.60
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Solution
The fourth proportional to 1,259,714,276.80, 1,889,571,415.20 and 892,382,257.60 is: 1,338,573,386.40
Step by Step Solution
- Step 1: Write the proportion equation
1,259,714,276.80 : 1,889,571,415.20 = 892,382,257.60 : x - Step 2: Convert to fraction form
1,259,714,276.80/1,889,571,415.20 = 892,382,257.60/x - Step 3: Cross multiply
1,259,714,276.80x = 1,889,571,415.20 × 892,382,257.60 - Step 4: Simplify right side
1,259,714,276.80x = 1,686,220,005,392,603,136 - Step 5: Solve for x
x = 1,686,220,005,392,603,136/1,259,714,276.80 - Step 6: Final answer
x = 1,338,573,386.40
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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.