Finding the Fourth Proportional to 7,488,321,557.20, 11,232,482,335.80 and 5,311,539,221.20
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Solution
The fourth proportional to 7,488,321,557.20, 11,232,482,335.80 and 5,311,539,221.20 is: 7,967,308,831.80
Step by Step Solution
- Step 1: Write the proportion equation
7,488,321,557.20 : 11,232,482,335.80 = 5,311,539,221.20 : x - Step 2: Convert to fraction form
7,488,321,557.20/11,232,482,335.80 = 5,311,539,221.20/x - Step 3: Cross multiply
7,488,321,557.20x = 11,232,482,335.80 × 5,311,539,221.20 - Step 4: Simplify right side
7,488,321,557.20x = 59,661,770,478,037,884,928 - Step 5: Solve for x
x = 59,661,770,478,037,884,928/7,488,321,557.20 - Step 6: Final answer
x = 7,967,308,831.80
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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.