Finding the Fourth Proportional to 5,221,134,289.50, 7,831,917,421.29 and 1,540,639,687.74
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Solution
The fourth proportional to 5,221,134,289.50, 7,831,917,421.29 and 1,540,639,687.74 is: 2,311,023,264.54
Step by Step Solution
- Step 1: Write the proportion equation
5,221,134,289.50 : 7,831,917,421.29 = 1,540,639,687.74 : x - Step 2: Convert to fraction form
5,221,134,289.50/7,831,917,421.29 = 1,540,639,687.74/x - Step 3: Cross multiply
5,221,134,289.50x = 7,831,917,421.29 × 1,540,639,687.74 - Step 4: Simplify right side
5,221,134,289.50x = 12,066,162,810,341,691,392 - Step 5: Solve for x
x = 12,066,162,810,341,691,392/5,221,134,289.50 - Step 6: Final answer
x = 2,311,023,264.54
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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.