Finding the Fourth Proportional to 957,181,132.10, 1,435,771,698.15 and 819,431,624.90
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Solution
The fourth proportional to 957,181,132.10, 1,435,771,698.15 and 819,431,624.90 is: 1,229,147,437.35
Step by Step Solution
- Step 1: Write the proportion equation
957,181,132.10 : 1,435,771,698.15 = 819,431,624.90 : x - Step 2: Convert to fraction form
957,181,132.10/1,435,771,698.15 = 819,431,624.90/x - Step 3: Cross multiply
957,181,132.10x = 1,435,771,698.15 × 819,431,624.90 - Step 4: Simplify right side
957,181,132.10x = 1,176,516,735,600,486,912 - Step 5: Solve for x
x = 1,176,516,735,600,486,912/957,181,132.10 - Step 6: Final answer
x = 1,229,147,437.35
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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.