Finding the Fourth Proportional to 827,584,968.20, 1,241,377,452.30 and 679,631,793.80
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Solution
The fourth proportional to 827,584,968.20, 1,241,377,452.30 and 679,631,793.80 is: 1,019,447,690.70
Step by Step Solution
- Step 1: Write the proportion equation
827,584,968.20 : 1,241,377,452.30 = 679,631,793.80 : x - Step 2: Convert to fraction form
827,584,968.20/1,241,377,452.30 = 679,631,793.80/x - Step 3: Cross multiply
827,584,968.20x = 1,241,377,452.30 × 679,631,793.80 - Step 4: Simplify right side
827,584,968.20x = 843,679,584,689,522,816 - Step 5: Solve for x
x = 843,679,584,689,522,816/827,584,968.20 - Step 6: Final answer
x = 1,019,447,690.70
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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.