Finding the Fourth Proportional to 1,259,722,421.20, 1,889,583,631.80 and 441,539,477.20
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Solution
The fourth proportional to 1,259,722,421.20, 1,889,583,631.80 and 441,539,477.20 is: 662,309,215.80
Step by Step Solution
- Step 1: Write the proportion equation
1,259,722,421.20 : 1,889,583,631.80 = 441,539,477.20 : x - Step 2: Convert to fraction form
1,259,722,421.20/1,889,583,631.80 = 441,539,477.20/x - Step 3: Cross multiply
1,259,722,421.20x = 1,889,583,631.80 × 441,539,477.20 - Step 4: Simplify right side
1,259,722,421.20x = 834,325,768,910,649,216 - Step 5: Solve for x
x = 834,325,768,910,649,216/1,259,722,421.20 - Step 6: Final answer
x = 662,309,215.80
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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.