Finding the Fourth Proportional to 638,642,405.70, 957,963,608.55 and 638,642,405.70
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Solution
The fourth proportional to 638,642,405.70, 957,963,608.55 and 638,642,405.70 is: 957,963,608.55
Step by Step Solution
- Step 1: Write the proportion equation
638,642,405.70 : 957,963,608.55 = 638,642,405.70 : x - Step 2: Convert to fraction form
638,642,405.70/957,963,608.55 = 638,642,405.70/x - Step 3: Cross multiply
638,642,405.70x = 957,963,608.55 × 638,642,405.70 - Step 4: Simplify right side
638,642,405.70x = 611,796,183,537,425,152 - Step 5: Solve for x
x = 611,796,183,537,425,152/638,642,405.70 - Step 6: Final answer
x = 957,963,608.55
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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.