Finding the Fourth Proportional to 1,259,714,811.20, 1,889,572,216.80 and 441,531,867.20
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Solution
The fourth proportional to 1,259,714,811.20, 1,889,572,216.80 and 441,531,867.20 is: 662,297,800.80
Step by Step Solution
- Step 1: Write the proportion equation
1,259,714,811.20 : 1,889,572,216.80 = 441,531,867.20 : x - Step 2: Convert to fraction form
1,259,714,811.20/1,889,572,216.80 = 441,531,867.20/x - Step 3: Cross multiply
1,259,714,811.20x = 1,889,572,216.80 × 441,531,867.20 - Step 4: Simplify right side
1,259,714,811.20x = 834,306,349,092,947,200 - Step 5: Solve for x
x = 834,306,349,092,947,200/1,259,714,811.20 - Step 6: Final answer
x = 662,297,800.80
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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.