Finding the Fourth Proportional to 6,438,560,287.20, 9,657,840,430.80 and 3,173,386,783.20
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Solution
The fourth proportional to 6,438,560,287.20, 9,657,840,430.80 and 3,173,386,783.20 is: 4,760,080,174.80
Step by Step Solution
- Step 1: Write the proportion equation
6,438,560,287.20 : 9,657,840,430.80 = 3,173,386,783.20 : x - Step 2: Convert to fraction form
6,438,560,287.20/9,657,840,430.80 = 3,173,386,783.20/x - Step 3: Cross multiply
6,438,560,287.20x = 9,657,840,430.80 × 3,173,386,783.20 - Step 4: Simplify right side
6,438,560,287.20x = 30,648,063,177,355,309,056 - Step 5: Solve for x
x = 30,648,063,177,355,309,056/6,438,560,287.20 - Step 6: Final answer
x = 4,760,080,174.80
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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.