Finding the Fourth Proportional to 702,725,523.08, 969,761,313.77 and 389,479,960.31
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Solution
The fourth proportional to 702,725,523.08, 969,761,313.77 and 389,479,960.31 is: 537,482,396.17
Step by Step Solution
- Step 1: Write the proportion equation
702,725,523.08 : 969,761,313.77 = 389,479,960.31 : x - Step 2: Convert to fraction form
702,725,523.08/969,761,313.77 = 389,479,960.31/x - Step 3: Cross multiply
702,725,523.08x = 969,761,313.77 × 389,479,960.31 - Step 4: Simplify right side
702,725,523.08x = 377,702,597,990,516,864 - Step 5: Solve for x
x = 377,702,597,990,516,864/702,725,523.08 - Step 6: Final answer
x = 537,482,396.17
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.