Finding the Fourth Proportional to 1,013,674,718.70, 1,520,512,078.05 and 323,651,724.30
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Solution
The fourth proportional to 1,013,674,718.70, 1,520,512,078.05 and 323,651,724.30 is: 485,477,586.45
Step by Step Solution
- Step 1: Write the proportion equation
1,013,674,718.70 : 1,520,512,078.05 = 323,651,724.30 : x - Step 2: Convert to fraction form
1,013,674,718.70/1,520,512,078.05 = 323,651,724.30/x - Step 3: Cross multiply
1,013,674,718.70x = 1,520,512,078.05 × 323,651,724.30 - Step 4: Simplify right side
1,013,674,718.70x = 492,116,355,879,858,688 - Step 5: Solve for x
x = 492,116,355,879,858,688/1,013,674,718.70 - Step 6: Final answer
x = 485,477,586.45
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Double scale
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Similar ratio
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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.