Finding the Fourth Proportional to 1,271,232,835.46, 1,906,113,041.76 and 430,593,834.99
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Solution
The fourth proportional to 1,271,232,835.46, 1,906,113,041.76 and 430,593,834.99 is: 645,641,381.89
Step by Step Solution
- Step 1: Write the proportion equation
1,271,232,835.46 : 1,906,113,041.76 = 430,593,834.99 : x - Step 2: Convert to fraction form
1,271,232,835.46/1,906,113,041.76 = 430,593,834.99/x - Step 3: Cross multiply
1,271,232,835.46x = 1,906,113,041.76 × 430,593,834.99 - Step 4: Simplify right side
1,271,232,835.46x = 820,760,524,584,676,480 - Step 5: Solve for x
x = 820,760,524,584,676,480/1,271,232,835.46 - Step 6: Final answer
x = 645,641,381.89
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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.