Finding the Fourth Proportional to 708,639,163.20, 1,062,958,744.80 and 326,433,211.20
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Solution
The fourth proportional to 708,639,163.20, 1,062,958,744.80 and 326,433,211.20 is: 489,649,816.80
Step by Step Solution
- Step 1: Write the proportion equation
708,639,163.20 : 1,062,958,744.80 = 326,433,211.20 : x - Step 2: Convert to fraction form
708,639,163.20/1,062,958,744.80 = 326,433,211.20/x - Step 3: Cross multiply
708,639,163.20x = 1,062,958,744.80 × 326,433,211.20 - Step 4: Simplify right side
708,639,163.20x = 346,985,036,438,185,280 - Step 5: Solve for x
x = 346,985,036,438,185,280/708,639,163.20 - Step 6: Final answer
x = 489,649,816.80
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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.