Finding the Fourth Proportional to 9,920,232,340.80, 14,880,348,511.20 and 5,557,597,742.40
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Solution
The fourth proportional to 9,920,232,340.80, 14,880,348,511.20 and 5,557,597,742.40 is: 8,336,396,613.60
Step by Step Solution
- Step 1: Write the proportion equation
9,920,232,340.80 : 14,880,348,511.20 = 5,557,597,742.40 : x - Step 2: Convert to fraction form
9,920,232,340.80/14,880,348,511.20 = 5,557,597,742.40/x - Step 3: Cross multiply
9,920,232,340.80x = 14,880,348,511.20 × 5,557,597,742.40 - Step 4: Simplify right side
9,920,232,340.80x = 82,698,991,291,970,322,432 - Step 5: Solve for x
x = 82,698,991,291,970,322,432/9,920,232,340.80 - Step 6: Final answer
x = 8,336,396,613.60
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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.