Finding the Fourth Proportional to 2,586,826,415.40, 3,880,239,623.10 and 746,639,125.80
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Solution
The fourth proportional to 2,586,826,415.40, 3,880,239,623.10 and 746,639,125.80 is: 1,119,958,688.70
Step by Step Solution
- Step 1: Write the proportion equation
2,586,826,415.40 : 3,880,239,623.10 = 746,639,125.80 : x - Step 2: Convert to fraction form
2,586,826,415.40/3,880,239,623.10 = 746,639,125.80/x - Step 3: Cross multiply
2,586,826,415.40x = 3,880,239,623.10 × 746,639,125.80 - Step 4: Simplify right side
2,586,826,415.40x = 2,897,138,720,085,905,408 - Step 5: Solve for x
x = 2,897,138,720,085,905,408/2,586,826,415.40 - Step 6: Final answer
x = 1,119,958,688.70
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1.5x scale
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.