Finding the Fourth Proportional to 1,429,158,138.30, 2,143,737,207.45 and 611,353,107.90
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Solution
The fourth proportional to 1,429,158,138.30, 2,143,737,207.45 and 611,353,107.90 is: 917,029,661.85
Step by Step Solution
- Step 1: Write the proportion equation
1,429,158,138.30 : 2,143,737,207.45 = 611,353,107.90 : x - Step 2: Convert to fraction form
1,429,158,138.30/2,143,737,207.45 = 611,353,107.90/x - Step 3: Cross multiply
1,429,158,138.30x = 2,143,737,207.45 × 611,353,107.90 - Step 4: Simplify right side
1,429,158,138.30x = 1,310,580,404,295,424,512 - Step 5: Solve for x
x = 1,310,580,404,295,424,512/1,429,158,138.30 - Step 6: Final answer
x = 917,029,661.85
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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.